Shridhar, D. R.; Rao, K. Srinivasa; Singh, A. N., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1985, vol. 24, p. 1263 - 1267
Shridhar, D. R.; Rao, K. Srinivasa; Singh, A. N., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1985, vol. 24, p. 1263 - 1267