Grinberg, Ya. Kh.; Lazarev, V. B.; Zavernyaev, A. Yu.; Shreider, V. A.; Chepik, S. D. Russian Journal of Physical Chemistry, 1986 , vol. 60, # 4 p. 630 - 631 Zhurnal Fizicheskoi Khimii, 1986 , vol. 60, p. 1044