Journal of the Chemical Society, , p. 2272 Journal of Applied Chemistry, , vol. 8, p. 459,462 Journal of Applied Polymer Science, , vol. 1, p. 376 Zhurnal Obshchei Khimii, , vol. 29, p. 2017; engl. Ausg. S. 1986 Trudy Kazansk. chim. technol. Inst.Chem.Abstr., , # 10 p. 29,30 Trudy Kazansk. chim. technol. Inst.Chem.Abstr., , p. 6503 Journal of the American Chemical Society, , vol. 78, p. 2126,2128