Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KOBAYASHI Tadashi and OKANO Toshio,2.HIGH-PERFORMANCE LIQUID CHROMATOGRAPHIC METHODS : Methods for Assay of Vitamin D,VITAMINS,0006386X,THE VITAMIN SOCIETY OF JAPAN,1981,55,11,529-536,https://cir.nii.ac.jp/crid/1390001205810554624,https://doi.org/10.20632/vso.55.11_529