Pentacyclic triterpene methyl ethers in recent lacustrine sediments (Lagoa do Ca????, Brazil), Organic Geochemistry, vol.36, issue.3, pp.449-461, 2005. ,
DOI : 10.1016/j.orggeochem.2004.09.005
Biomarker evidence for recent turf cultivation in Northeast Brazil (Lagoa do Boqueir??o, RN State), Organic Geochemistry, vol.41, issue.4, pp.427-430, 2010. ,
DOI : 10.1016/j.orggeochem.2009.12.008
First detection of triterpenyl acetates in soils: sources and potential as new palaeo-environmental biomarkers, 2011. ,