Sawhney, S N; Sharma, Pawan Kumar; Gupta, Asha, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1992, vol. 31, # 7, p. 421 - 426
Sawhney, S N; Sharma, Pawan Kumar; Gupta, Asha, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1992, vol. 31, # 7, p. 421 - 426