K. Abraham, P. Monchoux, L. Roux, and F. Seifert, Observations sur les exsolutions dans les orthoamphiboles des roches à sapphirine des, p.850, 1977.

. Pyrénées, Bulletin de la Société française de Minéralogie et Cristallographie, vol.100, pp.329-333

D. Ackermand, R. K. Herd, and B. F. Windley, Chemographic relationships in sapphirine-bearing rocks of the Limpopo belt, p.852, 1982.

, Revista Brasileira de Geociencias, vol.12, issue.1-3, pp.292-300

F. Albarède and A. Michard-vitrac, Age and significance of the north-pyrenean metamorphism, Earth and Planetary Science Letters, vol.40, pp.854-327, 1978.

A. Lallemant and H. G. , Structural and petrofabric analysis of an "alpine-type" peridotite: the lherzolite of the French Pyrénées, Leidse, vol.856, 1968.

, Geologische Mededelingen, vol.42, pp.1-57

A. Ly-&-newton and R. C. , H2O activity in concentrated KCl and KCl-NaCl solutions at high temperatures and pressures measured by 858 the brucite-periclase equilibrium, Contributions to Mineralogy and Petrology, vol.127, issue.3, pp.261-271, 1997.

M. Arima and R. L. Barnett, Sapphirine bearing granulites from the Sipiwesk Lake area of the late Archaean Pikwitonei granulite terrain, p.860, 1984.

C. Manitoba, Contributions to Mineralogy and Petrology, vol.88, pp.102-112

R. Asti, Y. Lagabrielle, S. Fourcade, B. Corre, and P. Monié, How do continents deform during mantle exhumation? Insights from the northern 862, 2019.

, Iberia inverted paleo-passive margin, western Pyrenees (France)

B. Azambre, M. Rossy, and M. Lago, Caractéristiques pétrologiques des dolérites tholéiitiques d'âge triasique (ophites) du domaine 864 pyrénéen, Bulletin de Minéralogie, vol.110, pp.379-396, 1987.

R. G. Berman, M. Engi, H. J. Greenwood, and T. H. Brown, Derivation of internally-consistent thermodynamic data by the technique of 866 mathematical programming: a review with application the system MgO-SiO2-H2O, Journal of Petrology, vol.27, issue.6, pp.1331-1364, 1986.

F. Bixel and C. Lucas, Approche géodynamique du Permien et du Trias des Pyrénées dans le cadre du, p.868, 1987.

, Geología Ibérica = Journal of Iberian Geology: an international publication of earth sciences, vol.11, pp.57-82

T. Blackburn, S. A. Bowring, B. Schoene, K. Mahan, and F. Dudas, U-Pb thermochronology: creating a temporal record of lithosphere thermal 870 evolution, Contributions to Mineralogy and Petrology, vol.162, issue.3, pp.479-500, 2011.

J. L. Bodinier, M. Guiraud, J. Fabriès, J. Dostal, and C. Dupuy, Petrogenesis of layered pyroxenites from the Lherz, Freychinede and Prades 872 ultramafic bodies, vol.51, pp.279-290, 1987.

G. Boillot, S. Grimaud, and A. Mauffret, Ocean-continent boundary off the Iberian margin: a serpentinite diapir west of the Galicia 874 Bank, Earth and Planetary Science Letters, vol.48, issue.1, pp.23-34, 1980.

P. Boulvais, D. Parseval, P. , D. Hulst, A. et al., Carbonate alteration associated with talc-chlorite mineralization in the eastern Pyrenees, 876 with emphasis on the St, Barthelemy Massif. Mineralogy and Petrology, vol.88, issue.3-4, pp.499-526, 2006.

P. Boulvais, G. Ruffet, J. Cornichet, and M. Mermet, Cretaceous albitization and dequartzification of Hercynian peraluminous granite in the 878, 2007.

S. Massif, Lithos, vol.93, pp.89-106

A. Boutin, M. De-saint-blanquat, and M. Poujol, Succession of Permian and Mesozoic metasomatic events in the eastern Pyrenees with 880 emphasis on the Trimouns talc-chlorite deposit, International Journal of Earth Sciences, vol.105, pp.747-770, 2016.

C. Bouscary, Les minéraux de métamorphisme du Trias de Bédeilhac (Ariège), Histoire Naturelle de Toulouse, vol.882, issue.1-2, pp.286-291, 1966.

C. Briqueu-l-&-innocent, Datation U/Pb sur zircon et géochimie isotopique Sr et Nd du volcanisme permien des Pyrénées occidentales 884 (Ossau et Anayet), Sciences de la 885 Terre, vol.316, issue.5, pp.623-628, 1993.

J. Canérot, Comparative study of the eastern Iberides (Spain) and the western Pyrenees (France) Mesozoic basins. Palaeogeography, 887 palaeoclimatology, palaeoecology, vol.87, pp.1-28, 1991.

J. Canérot and F. Delavaux, Remise 889 en question de la signification des lherzolites du sommet de Saraillé. Comptes rendus de l'Académie des sciences, p.890, 1986.

C. Physique, Sciences de l'univers, Sciences de la Terre, vol.302, issue.15, pp.951-956

R. Chelalou, T. Nalpas, and R. Bousquet, New sedimentological, structural and paleo-thermicity data in the Boucheville Basin (eastern 892 North Pyrenean Zone, France), Comptes Rendus de Géoscience, vol.348, issue.3-4, pp.312-321, 2016.

D. Cherniak, Pb diffusion in rutile, Contributions et Mineralogy and Petrology, vol.139, pp.198-207, 2000.

K. Chetouani, J. L. Bodinier, C. J. Garrido, C. Marchesi, I. Amri et al., Spatial variability of pyroxenite layers in the Beni Bousera orogenic 895 peridotite (Morocco) and implications for their origin, Comptes Rendus de Géoscience, vol.348, issue.8, pp.619-629, 2016.

D. M. Chew, J. A. Petrus, and B. S. Kamber, U-Pb LA-ICPMS dating using accessory mineral standards with variable common Pb, Chemical, vol.897, pp.185-199, 2014.

P. Choukroune, Contribution à l'étude structurale de la zone métamorphique nord-pyrénéenne ; Tectonique et métamorphisme des 899 formations secondaires de la forêt de Boucheville (Pyrénées orientales), Bulletin du Bureau des Recherches Géologiques et Minières, vol.4, pp.46-63, 1970.

P. Choukroune, La brèche de Lherz dite « d'explosion liée à la mise en place des lherzolites » est une brèche sédimentaire, p.901, 1973.

. Cénozoïque, Comptes Rendus de l'Académie des Sciences, Série D, vol.277, pp.2621-2624

P. Choukroune, Structure et évolution tectonique de la Zone Nord-Pyrénéenne : Analyse de la déformation dans une portion de chaîne 903 à schistosité subverticale, 1976.

A. G. Christy, The stability of sapphirine + clinopyroxene: implications for phase relations in the CaO-MgO-Al2O3-SiO2 system under 905 deep-crustal and upper mantle conditions, Contributions to Mineralogy and Petrology, vol.102, pp.422-428, 1989.

C. Clerc, Y. Lagabrielle, M. Neumaier, J. Y. Reynaud, S. De et al., Exhumation of subcontinental mantle rocks: evidence from 907 ultramafic-bearing clastic deposits nearby the Lherz peridotite body, Bulletin de la Société Géologique de France, vol.183, issue.5, p.908, 2012.

C. Clerc, P. Boulvais, Y. Lagabrielle, S. De, and M. Blanquat, Ophicalcites from the northern Pyrenean belt: a field, petrographic and stable 910 isotope study, International Journal of Earth Sciences, pp.1-23, 2014.

Y. Clerc-c-&-lagabrielle, Thermal control on the modes of crustal thinning leading to mantle exhumation: Insights from the Cretaceous 912 Pyrenean hot paleomargins, Tectonics, vol.33, pp.1340-1359, 2014.

C. Clerc, A. Lahfid, and P. Monié, High-temperature metamorphism during extreme thinning of the continental crust: a reappraisal of 914 the north Pyrenean paleo-passive margin, Solid Earth Discussions, vol.6, pp.1-61, 2015.

C. Clerc, Y. Lagabrielle, and P. Labaume, Basement-Cover decoupling and progressive exhumation of metamorphic sediments at hot 916 rifted margin. Insights from the Northeastern Pyrenean analog, Tectonophysics, vol.686, pp.82-97, 2016.

F. Conquéré, Pétrologie des complexes ultramafiques de l'Ariège, Doctoral Dissertation, vol.333, 1978.

B. Corre, Y. Lagabrielle, P. Labaume, S. Fourcade, C. Clerc et al., Deformation associated with mantle exhumation in a distal, hot 919 passive margin environment: New constraints from the Saraillé Massif (Chaînons Béarnais, North-Pyrenean Zone), Comptes Rendus de 920 Géoscience, vol.348, pp.279-289, 2016.

B. Corre, P. Boulvais, M. C. Boiron, Y. Lagabrielle, L. Marasi et al., Fluid circulations in response to mantle exhumation at the passive 922 margin setting in the North Pyrenean Zone, France. Mineralogy and Petrology, vol.112, issue.5, pp.647-670, 2018.

H. Costa-s-&-maluski, Use of the 40 Ar, 1988.

, Ar stepwise heating method for dating mylonite zones: An example from the St, Chemical Geology: Isotope Geoscience section, vol.924, issue.2, pp.127-144

L. E. Dauteuil-o-&-ricou, Une circulation de fluides de haute-température à l'origine du métamorphisme crétacé nord-926 pyrénéen, Geodinamica Acta, vol.3, issue.3, pp.237-249, 1989.

E. J. Debroas, Evolution de la fosse du flysch ardoisier de l'Albien supérieur au Sénonien inferieur (zone interne métamorphique des 928, 1978.

, Bulletin de la Société géologique de France, vol.7, pp.639-648

E. J. Debroas, M. Bilotte, J. Canérot, and G. Astruc, Réinterprétation des brèches de la Faille nord-pyrénéenne ariégeoise (France), 2010.

&. Société-d, Histoire Naturelle de Toulouse, vol.146, pp.77-88

I. Defelipe, D. Pedreira, J. A. Pulgar, E. Iriarte, and M. Mendia, Mantle exhumation and metamorphism in the Basque-Cantabrian Basin, p.932, 2017.

. Spain, Stable and clumped isotope analysis in carbonates and comparison with ophicalcites in the North-Pyrenean Zone (Urdach and Lherz)

G. Geochemistry, Geosystems, vol.18, issue.2, pp.631-652

Y. Denèle, J. L. Paquette, P. Olivier, and P. Barbey, Permian granites in the Pyrenees: the Aya pluton (Basque Country), Terra Nova, vol.24, issue.2, pp.105-935, 2012.

Y. Denèle, B. Laumonier, J. L. Paquette, P. Olivier, G. Gleizes et al., Timing of granite emplacement, crustal flow and gneiss dome 937 formation in the Variscan segment of the Pyrenees, Special Publications, vol.405, issue.1, pp.265-287, 2014.

A. R. Denny, D. S. Kelley, and G. L. Früh-green, Geologic evolution of the Lost City hydrothermal field, Geochemistry, p.939, 2016.

, Geosystems, vol.17, issue.2, pp.375-394

M. De-saint-blanquat, F. Bajolet, and A. Grand'homme, Cretaceous mantle exhumation in the central Pyrenees: new constraints from 941 the peridotites in eastern Ariège (North Pyrenean zone, France), Comptes Rendus de Géoscience, vol.348, issue.3-4, pp.268-278, 2016.

M. Ducoux, Structure, thermicité et évolution géodynamique de la Zone Interne Métamorphique des Pyrénées, Doctoral Dissertation, p.943, 2017.

T. Duretz, R. Asti, Y. Lagabrielle, J. P. Brun, A. Jourdon et al., Numerical modelling of Cretaceous Pyrenean Rifting: The 945 interaction between mantle exhumation and syn-rift salt tectonics, 2019.

A. K. Engvik and H. Austrheim, Formation of sapphirine and corundum in scapolitised and Mg-metasomatised gabbro, Terra Nova, vol.22, issue.3, 2010.

N. Espurt, J. P. Callot, J. Totterdell, H. Struckmeyer, and R. Vially, Interactions between continental breakup dynamics and large-scale delta 949 system evolution: Insights from the Cretaceous Ceduna delta system, Southern Australian margin. Tectonics, vol.28, issue.6, 2009.

J. Fabriès, J. P. Lorand, J. L. Bodinier, and C. Dupuy, Evolution of the upper mantle beneath the Pyrenees: evidence from orogenic spinel 951 lherzolite massifs, Journal of Petrology, issue.2, pp.55-76, 1991.

S. Fallourd, M. Poujol, P. Boulvais, J. L. Paquette, . De-saint et al., In situ LA-ICP-MS U-Pb titanite dating of Na-Ca 953 metasomatism in orogenic belts: the North Pyrenean example, International Journal of Earth Sciences, vol.103, issue.3, pp.667-682, 2014.

G. Senz and J. , Cuencas extensivas del Cretácico Inferior en los Pirineos centrales. Formación y subsecuente inversión, 2002.

A. Garrido-megías, Síntesis geológica del Secundario y Terciario entre los ríos Cinca y Segre (Pirineo central de la vertiente surpirenaica, 957 provincias de Huesca y Lérida), Boletín Geológico y Minero de España, vol.83, pp.1-47, 1972.

T. Gasparik, A petrogenetic grid for the system MgO-Al2O3-SiO2, The Journal of Geology, vol.102, issue.1, pp.97-109, 1994.

M. Gillard, G. Manatschal, and J. Autin, How can asymmetric detachment faults generate symmetric Ocean Continent Transitions?, Terra, vol.960, issue.1, pp.27-34, 2016.
URL : https://hal.archives-ouvertes.fr/hal-01222004

G. Gleizes, Etude géologique et minéralogique du Trias de Betchat et de Bonrepaux (Ariège), Thèse de troisième cycle, 1971.

B. Sabatier--toulouse-iii and . Des, Recherches Géologiques et Minières, vol.121

J. M. Golberg and H. Maluski, Données nouvelles et mise au point sur l'âge du métamorphisme pyrénéen = Age of the Pyrenean 964 metamorphism: new data and discussion, Comptes Rendus de l'Académie des Sciences, vol.306, issue.6, pp.429-435, 1988.

J. M. Golberg and A. F. Leyreloup, High temperature-low pressure Cretaceous metamorphism related to crustal thinning, p.966, 1990.

P. Zone and ). France, Contributions to Mineralogy and Petrology, vol.104, pp.194-207

Z. Gong, C. G. Langereis, and T. Mullender, The rotation of Iberia during the Aptian and the opening of the Bay of Biscay, Earth and 968 Planetary Science Letters, vol.273, pp.80-93, 2008.

E. S. Grew, Kornerupine at the Sar e Sang, Afghanistan, whiteschist locality: Implications for tourmaline-kornerupine distribution in 970 metamorphic rocks, American Mineralogist, vol.73, issue.3-4, pp.345-357, 1988.

E. S. Grew, J. V. Chernosky, G. Werding, K. Abraham, N. Marquez et al., Chemistry of kornerupine and associated minerals, a wet 972 chemical, ion microprobe, and X-ray study emphasizing Li, Be, B and F contents, Journal of Petrology, vol.31, issue.5, pp.1025-1070, 1990.

M. R. Handy, S. M. Schmid, R. Bousquet, E. Kissling, and D. Bernoulli, Reconciling plate tectonic reconstructions of Alpine Tethys with the 974 geological-geophysical record of spreading and subduction in the Alps, Earth-Science Reviews, vol.102, pp.121-158, 2010.

S. L. Harley, Sapphirine granulites from the Vestfold Hills, East Antarctica: geochemical and metamorphic evolution, Antarctic 976 Science, vol.5, issue.4, pp.389-402, 1993.

. Harley and Y. Motoyoshi, Al zoning in orthopyroxene in a sapphirine quartzite: evidence for >1120 °C UHT metamorphism in the 978, 2000.

, Antarctica, and implications for the entropy of sapphirine, Contributions to Mineralogy and Petrology, vol.138, issue.4, pp.293-307

F. C. Hawthorne, M. A. Cooper, and E. S. Grew, The crystal chemistry of the kornerupite-prismatine series. III. Chemical relations, Canadian 980 Mineralogist, vol.47, pp.275-296, 2009.

P. Henry, B. Azambre, R. Montigny, M. Rossy, and R. K. Stevenson, Late mantle evolution of the Pyrenean sub-continental lithospheric mantle in 982 the light of new 40 Ar-39 Ar and Sm-Nd ages on pyroxenites and peridotites, Tectonophysics, vol.296, issue.1-2, pp.103-123, 1998.

S. Jammes, G. Manatschal, L. Lavier, and E. Masini, Tectonosedimentary evolution related to extreme crustal thinning ahead of a propagating 984 ocean: Example of the western Pyrenees, Tectonics, vol.28, issue.4, 2009.

N. Jöns and V. Schenk, Relics of the Mozambique Ocean in the central East African Orogen: evidence from the Vohibory Block of southern 986, 2008.

. Madagascar, Journal of Metamorphic Geology, vol.26, pp.17-28

A. Lacroix, Les phénomènes de contact de la lherzolite et de quelques ophites des Pyrénées, Bulletin du Service de la Carte Géologique 988 de France, vol.6, pp.307-346, 1894.

Y. Lagabrielle and J. L. Bodinier, Submarine reworking of exhumed subcontinental mantle rocks: field evidence from the Lherz peridotites, p.990, 2008.
URL : https://hal.archives-ouvertes.fr/hal-00412602

F. Pyrenees, Terra Nova, vol.20, pp.11-21

Y. Lagabrielle, P. Labaume, S. De, and M. Blanquat, Mantle exhumation, crustal denudation, and gravity tectonics during Cretaceous rifting 992 in the Pyrenean realm (SW Europe): Insights from the geological setting of the lherzolite bodies, Tectonics, vol.29, issue.4, 2010.

Y. Lagabrielle, C. Clerc, and A. Vauchez, Very high geothermal gradient during mantle exhumation recorded in mylonitic marbles and 994, 2016.

, Comptes Rendus de Géoscience, vol.348, pp.995-290

Y. Lagabrielle, R. Asti, and S. Fourcade, Mantle exhumation at magma-poor passive continental margins. Part I. 3D architecture and 997 metasomatic evolution of a fossil exhumed mantle domain, 2019.
URL : https://hal.archives-ouvertes.fr/hal-02262206

F. Géologique-de, , vol.190, p.8

M. Lago, E. Arranz, A. Pocovi, C. Galé, and A. Gil-imaz, Permian magmatism and basin dynamics in the southern Pyrenees: a record of the 1000 transition from late Variscan transtension to early Alpine extension, Special Publications, vol.223, issue.1, pp.439-464, 2004.

L. Roux, V. Bodinier, J. L. Tommasi, and A. , The Lherz spinel lherzolite: refertilized rather than pristine mantle. Earth and Planetary Science, Letters, vol.259, issue.3, pp.599-612, 1002.
URL : https://hal.archives-ouvertes.fr/hal-00406433

K. R. Ludwig, Isoplot/Ex Version 2.49. A geochronological toolkit for Microsoft Excel, 2001.

E. Masini, G. Manatschal, J. Tugend, G. Mohn, and J. M. Flament, The tectono-sedimentary evolution of a hyper-extended rift basin: the 1005 example of the Arzacq-Mauléon rift system, International Journal of Earth Sciences, vol.103, issue.6, pp.1569-1596, 2014.

K. R. Mcclay, P. S. Whitehouse, T. Dooley, and M. Richards, 3D evolution of fold and thrust belts formed by oblique convergence. Marine and 1007 Petroleum Geology, vol.21, pp.857-877, 2004.

G. Meinhold, Rutile and its applications in earth sciences, Earth-Science Reviews, vol.102, issue.1-2, pp.1-28, 2010.

K. Mezger, G. N. Hanson, and S. R. Bohlen, High precision U-Pb ages of metamorphic rutile: applaication to the cooling history of high-grade 1010 terranes, Earth and Planetary Science Letters, vol.96, pp.106-118, 1989.

P. Monchoux, Bulletin de la Société française de Minéralogie et de, Cristallographie, vol.92, pp.397-399, 1969.

P. Monchoux, Les lherzolites pyrénéennes : contribution à l'étude de leur minéralogie, de leur genèse et de leurs transformations, 1970.

P. Monchoux, Roches à sapphirine au contact des lherzolites pyrénéennes, Contributions to Mineralogy and Petrology, vol.37, pp.47-64, 1972.

P. Monchoux, Description des gisements de sapphirine associés aux lherzolites pyrénéennes : I. gisements de l'étang de Lherz, Bulletin 1016 de la Société d'Histoire, pp.410-419, 1972.

R. Montigny, B. Azambre, M. Rossy, and R. Thuizat, K-Ar study of cretaceous magmatism and metamorphism in the Pyrenees: age and length 1018 of rotation of the Iberian Peninsula, Tectonophysics, vol.129, pp.257-213, 1986.

P. B. Moore, The crystal structure of sapphirine, American Mineralogist: Journal of Earth and Planetary Materials, vol.54, issue.1-2, pp.31-49, 1969.

T. Morishita, S. Arai, and F. Gervilla, High-pressure aluminous mafic rocks from the Ronda peridotite massif, southern Spain: significance of 1021 sapphirine-and corundum-bearing mineral assemblages, Lithos, vol.57, issue.2-3, pp.143-161, 2001.

T. G. Nijland, J. L. Touret, and D. Visser, Anomalously low temperature orthopyroxene, spinel, and sapphirine occurrences in metasediments 1023 from the Bamble amphibolite-to-granulite facies transition zone (South Norway): possible evidence for localized action of saline fluids. The, Journal of Geology, vol.106, issue.5, pp.575-590, 1024.

J. L. Olivet, La cinématique de la plaque ibérique, Bulletin des Centres de Recherche Exploration-Production Elf-Aquitaine, vol.20, pp.131-195, 1996.

J. L. Paquette, J. L. Piro, and J. L. Devidal, Sensitivity enhancement in LA-ICP-MS by N2 addition to carrier gas: Application to radiometric 1027 dating of U-Th-bearing minerals, Agilent ICP-MS Journal, vol.58, pp.4-5, 2014.

C. Paton, J. D. Woodhead, J. C. Hellstrom, J. M. Hergt, A. Greig et al., Improved laser ablation U-Pb zircon geochronology through robust 1029 downhole fractionation correction. Geochemistry, Geophysics, Geosystems 11, pp.0-06, 2010.

G. Péron-pinvidic-g-&-manatschal, The final rifting evolution at deep magma-poor passive margins from Iberia-Newfoundland: a new 1031 point of view, International Journal of Earth Sciences, vol.98, issue.7, pp.1581-1597, 2009.

P. T. Péron-pinvidic-g-&-osmundsen, Architecture of the distal and outer domains of the Mid-Norwegian rifted margin: Insights from the 1033, 2016.

, Rån-Gjallar ridges system, Marine and Petroleum Geology, vol.77, pp.280-299

K. K. Podlesskii, L. Y. Aranovitch, T. V. Gerya, and N. A. Kosyakova, Sapphirine-bearing assemblages in the system MgO-Al2O3-SiO2: a continuing 1035 ambiguity, vol.20, pp.721-734, 2008.

K. K. Podlesskii, Stability of Sapphirine-Bearing Mineral Assemblages in the System FeO-MgO-Al2O3-SiO2 and Metamorphic P-T 1037 Parametres of Aluminous Granulites, vol.18, pp.350-368, 2010.

M. Poujol, P. Boulvais, and J. Kosler, Regional-scale Cretaceous albitization in the Pyrenees: evidence from in situ U-Th-Pb dating of 1039 monazite, titanite and zircon, Journal of the Geological Society of London, vol.167, pp.751-767, 2010.

J. Ravier, Le métamorphisme des terrains secondaires des Pyrénées. Mémoires de la Société Géologique de France 86, vol.250, 1959.

J. Ravier and J. Thiébaut, Sur l'origine lagunaire des marbres et cornéennes mésozoïques du col d'Agnes (Ariège), Académie des Sciences, vol.294, pp.127-130, 1982.

G. Rosenbaum, G. S. Lister, and C. Duboz, Relative motions of Africa, Iberia and Europe during Alpine orogeny, Tectonophysics, vol.359, pp.117-129, 2002.

L. Roux, L'évolution des roches du faciès granulite et le problème des ultramafitites dans le massif de Castillon (Ariège), Doctoral 1045 Dissertation, vol.487, 1977.

N. Saspiturry, P. Razin, T. Baudin, O. Serrano, B. Issautier et al., , 2019.

M. Basin, Marine and Petroleum Geology, vol.104, pp.86-105

U. Schärer, P. D. Parseval, M. Polvé, S. De, and M. Blanquat, Formation of the Trimouns talc-chlorite deposit (Pyrenees) from persistent 1049 hydrothermal activity between 112 and 97 Ma, Terra Nova, vol.11, issue.1, pp.30-37, 1999.