Gupta, S. C.; Yadav, N. S.; Dhawan, S. N., Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1991, vol. 30, # 8, p. 790 - 792
Gupta, S. C.; Yadav, N. S.; Dhawan, S. N., Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1991, vol. 30, # 8, p. 790 - 792