Fazylov; Nurkenov; Kenzhetaeva; Satpaeva, Zh. B.; Karipova, G. Zh. Russian Journal of General Chemistry, 2013 , vol. 83, # 9 p. 1794 - 1795 Zh. Obshch. Khim., 2013 , vol. 83, # 9 p. 1579 - 1580,2