1. Culliamet, G., J. Pharm. Belg., 1994, vol. 49, p. 216; Pavlov, S., Bogavac, M., and Arsenijevic, Z., Pharmazie, 1990, vol. 45, p. 286; Kuznetsov, V.V., Khim.-Farm. Zh., 1991, no. 7, p. 61.
2. FRG Patent Appl. no. 3 844 355, 1990; Ref. Zh., Khim., 1991, no. 10 N 108 P.
3. Chowdhury, A.K.D., Sarkar, M., Chowdhury, S.R., and Mahalanabis, K.K., Synth. Commun., 1996, vol. 26, p. 4233.
4. Dyachenko, V.D., Nikishin, A.A., and Litvinov, V.P., Khim. Geterotsikl. Soedin., 1997, p. 996; Dyachenko, V.D., Nikishin, A.A., and Chernega, A.N., Khim. Geterotsikl. Soedin., 2003, p. 1316.
5. Organikum. Organisch-chemisches Grundpraktikum, Berlin: Wissenschaften, 1964, 3rd ed. Translated under the title Obshchii praktikum po organicheskoi khimii, Moscow: Mir, 1965, p. 445.