Popova, R. Ya.; Gudasheva, T. A.; Trofimov, S. S.; Ostrovskaya, R. U.; Skoldinov, A. P.
Pharmaceutical Chemistry Journal, 1983 , vol. 17, # 12 p. 858 - 864
Khimiko-Farmatsevticheskii Zhurnal, 1983 , vol. 17, # 12 p. 1439 - 1445

Gramain, Jean-Claude; Remuson, Roland
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1982 , # 10 p. 2341 - 2346