Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ogihara Shigenori,GC/MS analysis of C40 biphytane isolated from the sediment near the methane seep site,Researches in Organic Geochemistry,13449915,The Japanese Association of Organic Geochemists,2009,25,0,85-90,https://cir.nii.ac.jp/crid/1390001205414119168,https://doi.org/10.20612/rog.25.0_85