@article{oai:tokyo-kasei.repo.nii.ac.jp:00011191,
 author = {Horikawa, Hiroaki},
 journal = {東京家政大学研究紀要},
 month = {Mar},
 note = {application/pdf},
 pages = {1--8},
 title = {Studies on the Benzotropolone Pigment formed from (+)-Catechin and Gallic acid : Part I. Synthesis of the Benzotropolone Pigment from(+)-Catechin and Gallic acid},
 volume = {9},
 year = {1969}
}