1. M. V. Gorelik, R. A. Khamidullina, and A. L. Shakhnovich, Summary of the Reports of the III All-Union Conference on Organic Luminophores, All-Union Scientific Research Institute of Monocrystals, Khar'kov (1980), p. 20.
2. V. V. Russkikh and E. P. Fokin, Zh. Org. Khim., 17, 1558 (1981).
3. M. V. Gorelik and R. A. Alimova, Zh. Org. Khim., 20, 1553 (1984).
4. M. V. Gorelik and R. A. Alimova, Zh. Org, Khim., 20, 818 (1984).
5. T. A. Mikhailova, R. A. Alimova, N. I. Nesterova, A. L. Shakhnovich, and M. V. Gorelik, Khim. Geterotsikl. Soedin., No. 4, 486 (1985).