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Glushkov, R. G.; Adamskaya, E. V.; Oleinik, A. F.; Silin, V. A.; Padeiskaya, E. N.; Solov'eva N. P.
Pharmaceutical Chemistry Journal, 1986 , vol. 20, # 3 p. 200 - 203
Khimiko-Farmatsevticheskii Zhurnal, 1986 , vol. 20, # 3 p. 303 - 317

Botteselle, Giancarlo V.; Hough, Thomas L. S.; Venturoso, Raphael C.; Cella, Rodrigo; Vieira, Adriano S.; Stefani, Helio A.
Australian Journal of Chemistry, 2008 , vol. 61, # 11 p. 870 - 873