著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Ioan Lascu and Joshua M. Feinberg and Jeffrey A. Dorale and Hai Cheng and R. Lawrence Edwards,Age of the Laschamp excursion determined by U-Th dating of a speleothem geomagnetic record from North America,Geology,0091-7613,Geological Society of America,2016-01-04,44,2,139-142,https://cir.nii.ac.jp/crid/1361137045162887424,https://doi.org/10.1130/g37490.1