Balasubramaniyan, V.; Balasubramaniyan, P.; Shaikh, A. S., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1989, vol. 28, # 1-11, p. 123 - 125
Wagh, S. B.; Shaikh, A. S.; Balasubramaniyan, V., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1983, vol. 22, # 9, p. 868 - 871