Thirty-Year Period in Secular Variation of the Main Geomagnetic Field

  Wen Yao Xu AuthorId : 394683
Author

  H. C. Nataf ¹ AuthorId : 299834

Author IdHAL : henri-claude-nataf ORCID : https://orcid.org/0000-0001-6737-1314 ResearcherId : http://www.researcherid.com/rid/K-7167-2012

  Zi Gang Wei AuthorId : 394684
Author

  Ai Min Du AuthorId : 394685
Author