1. X. M. Wang, C. Wang, W. T. Yu, Y. F. Zhou, X. Zhao, Q. Fang, and M. H. Jiang, Can. J. Chem., 79, No. 2, 174–182 (2001).
2. A. K. Belousov, N. N. Blokhin, V. I. Borisov, G. F. Gauze, S. A. Giller, L. B. Gorbacheva, Yu. V. Dudnik, M. Yu. Lidak, Yu. I. Lorie, E. Ya. Lukevits, N. I. Perevodchikova, Z. P. Sof′ina, and A. B. Syrkin, Chemotherapy of Malignant Tumors [in Russian], Meditsina, Moscow (1977).
3. W. J. Watts, C. P. Lawler, and T. Knoerzer, Eur. J. Pharmacol., 239, 271–276 (1993).
4. B. M. Krasovitskii and B. M. Bolotin, Organic Luminophores [in Russian], Khimiya, Leningrad (1984), pp. 344–350.
5. C. N. R. Rao, Electronic Spectra in Chemistry [Russian translation], Mir, Moscow (1964).