Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TAKAOKA M.,Of the phenolic substrate of hellebore (Veratrum grandiflorum Loes. fil.),J Fac Sci Hokkaido Imper Univ.,,,1940,3,,1-16,https://cir.nii.ac.jp/crid/1574231876097149312,