1. P.J. Nigrey, B. Morosin, J.E. Kwak, E.L. Venturini, R.J. Baughman: Synth. Met. 16, 1 (1986).
2. R.N. Iyubovskaya, R.B. Lyubovskii, R.P. Shibaeva, M.Z. Aldoshina, L.M. Goldenberg, L.P. Rozenberg, M.L. Khidekel, Y.P. Shulpyakov: Pis’ma v ZhETF 42, 380 (1985).
3. R.P. Shibaeva, L.P. Rozenberg: Kristallographiya 33, 1402 (1988).
4. R.N. Lyubovskaya, E.I. Zhilyaeva, S.I. Pesotskii, R.B. Lyubovskii, L.O. Atovmyan, O.A. Dyaohenko, T.G. Takhirov: Pis’ma v ZhETF 46, 149 (1987).
5. A. Kobayashi, R. Sato, H. Kobayashi, S. Moriyama, K. Kajita, W. Sasaki: Chem. Lett., 459 (1987).