Maliaiah, B. Veera; Krupadanam, G. L. David; Srimannarayana, G., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1985, vol. 24, p. 862 - 863
Reddy, Ch. Ramakrishna; Krupadanam, G. L. David; Srimannarayana, G., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1987, vol. 26, p. 974 - 976