1. M. J. Aroney, R. J. W. Le Fevre, R. K. Pierens, and H. K. L. The, J. Chem., Soc., B, 1132 (1971).
2. G. Ya. Cheryukanova, Summary of Candidate's Thesis [in Russian], Kazan' (1974).
3. E. P. Vedeneev, Program for the Treatment of the Results of Electron Diffraction Studies, The Complex ÉKRAFON [in Russian], Computing Center, Moscow State University, No. 5, Moscow (1969).
4. B. Rozhondai, M. Kolonics, and I. Hargittai, Ienskoe Obozrenie, 285 (1974).
5. N. M. Zaripov and V. A. Naumov, Zh. Strukt. Khim.,14, 588 (1973).