Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Chikaraishi Yoshito and Takano Yoshinori and Ohkouchi Naohiko,GC/MS analysis of amino acids as pivaloyl/isopropylesters,Researches in Organic Geochemistry,13449915,The Japanese Association of Organic Geochemists,2009,25,0,61-70,https://cir.nii.ac.jp/crid/1390282680390828928,https://doi.org/10.20612/rog.25.0_61