Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kanaoka Yuichi and Sato Eisuke and Ban Yoshio,Polyphosphate Ester as a Synthetic Agent. VI. The Bischler-Napieralski Reaction of Tryptamine and Tryptophan Derivatives by Means of Polyphosphate Ester,Chemical and Pharmaceutical Bulletin,00092363,The Pharmaceutical Society of Japan,1967,15,1,101-107,https://cir.nii.ac.jp/crid/1390282679147212032,https://doi.org/10.1248/cpb.15.101