Hishmat, O. H.; Gohar, A.-K. M.; Nasef, A. M. M., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1980, vol. 19, # 2, p. 118 - 121
Hishmat, O. H.; Gohar, A.-K. M.; Nasef, A. M. M., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1980, vol. 19, # 2, p. 118 - 121