Trehan, I. R.; Kad, G. L.; Singh, Jangbir, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1987, vol. 26, # 1-12, p. 212 - 215
Trehan, I. R.; Kad, G. L.; Singh, Jangbir, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1987, vol. 26, # 1-12, p. 212 - 215