Golounin, A. V.; Shukhta, T. K.; Kirienko, E. K.; Petrova, M. P.; Esavkin, E. V. Russian Journal of Applied Chemistry, 1994 , vol. 67, # 8.2 p. 1167 - 1169 Zhurnal Prikladnoi Khimii (Sankt-Peterburg, Russian Federation), 1994 , vol. 67, # 8 p. 1324 - 1327