Bhardwaj, D. K.; Gupta, A. K.; Jain, R. K., Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1981, vol. 20, # 6, p. 446 - 448
Bhardwaj, D. K.; Gupta, A. K.; Jain, R. K., Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1981, vol. 20, # 6, p. 446 - 448