1. U. M. Dzhemilev, R. V. Kunakova, N. Z. Baibulatova, and G. A. Tolstikov, Dokl. Akad. Nauk SSSR,286, No. 3, 643 (1986).
2. U. M. Dzhemilev, R. V. Kunakova, and V. V. Sidorova, Izv. Akad. Nauk SSSR, Ser. Khim., No. 10, 2273 (1985).
3. T. K. Tkachenko, N. Z. Baibulatova, R. L. Gaisin, et al., Chemistry of Unsaturated Compounds, Abstracts of Papers of the All-Union Conference in Memory of A. M. Butlerov, Part 1, Kazan' (1986), p. 131.
4. W. Schorth, F. Billig, and G. Reinhold, Angew. Chem.,79, No. 15, 685 (1967).
5. G. Henrici-Olive and S. Olive, Monographs in Modern Chemistry, Vol. 9: Coordination and Catalysis, Verlag Chemie, Weinheim (1977).