Kasradze; Ignatyeva; Khusnutdinov; Suponitskii, K. Yu.; Antipin, M. Yu.; Yunusov Chemistry of Heterocyclic Compounds, 2012 , vol. 48, # 7 p. 1018 - 1027 Khim. Geterotsikl. Soedin., 2012 , vol. 48, # 7 p. 1095 - 1106,12