Hoshiko, Tomonori; Watanabe, Yutaka; Ozaki, Shoihiro
Heterocycles, 1983 , vol. 20, # 12 p. 2429 - 2431

Sanyal, Utpal; Dutta, Sanghamitra; Banerjee, Sadhana; Chakraborti, S. K.
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1982 , vol. 21, # 6 p. 565 - 569

Sanyal, Utpal; Chakraborti, S. K.
Synthetic Communications, 1982 , vol. 12, # 13 p. 1047 - 1054