Gardner; Moir; Purves
Canadian Journal of Research, Section B: Chemical Sciences, 1948 , vol. 26, p. 681,687

Ty, Nancy; Dupeyre, Gregory; Chabot, Guy G.; Seguin, Johanne; Tillequin, Francois; Scherman, Daniel; Michel, Sylvie; Cachet, Xavier
Bioorganic and Medicinal Chemistry, 2008 , vol. 16, # 15 p. 7494 - 7503

Adachi; Otsuki
Chemical and Pharmaceutical Bulletin, 1976 , vol. 24, # 11 p. 2803 - 2809