1. G. A. Razuvaev, B. G. Gribov, G. A. Domrachev, and B. A. Salamatin, Grganometallic Compounds in Electronics [in Russian], Nauka, Moscow (1972).
2. L. D. Derkacheva, G. V. Peregudov, and A. I. Sokolovskaya, Usp. Fiz. Nauk,91, No. 2 247 (1967).
3. I. M. Batyaev, Usp. Khim.,40, No. 7, 1333 (1971).
4. A. P. Aleksandrov and V. N. Genkin, Opt. i Spekt.,21, No. 5, 758 (1966).
5. V. P. Gribkovskii and V. K. Kuznetsov, Zh. Prikl. Spekt.,1, 340 (1964).