Bell, Richard; Cottam, Peter D.; Davies, John; Jones, D. Neville
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1981 , # 7 p. 2106 - 2115

Singh, Harjit; Batra, Manohar S.
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1987 , vol. 26, # 1-12 p. 1111 - 1112

Nakao; Yanagisawa; Ishihara; Nakayama; Ando; Nakazawa; Shimizu; Kaneko; Nagano; Sugawara
Journal of Antibiotics, 1979 , vol. 32, # 4 p. 320 - 329