Angelino, S. A. G. F.; Buurman, D. J.; Plas, H. C. van der; Mueller, F.
Recueil: Journal of the Royal Netherlands Chemical Society, 1983 , vol. 102, # 6 p. 331 - 336
El-Sharief, A. M. Sh.; Ammar, M. S.; Ammar, Y. A.; Zaki, M. E. A.
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1983 , vol. 22, # 7 p. 700 - 704