1. É. P. Zeer, O. V. Falaleev, Yu. N Ivanov, et al.,Khim. Fiz.,8, No. 8, 1067–1077 (1989).
2. É. P. Zeer, O. V. Falaleev, and V. E. Zobov,Chem. Phys. Lett.,100, No. 1, 24–28 (1983).
3. É. P. Zeer, O. V. Falaleev, L. G. Falaleeva and V. V. Menshikov,Khim. Fiz.,6, No. 6, 857–859 (1987).
4. M. L. Afanasiev, É. P. Zeer, O. V. Falaleev, and V. V. Menshikov,Dokl. Akad. Nauk SSSR,303, No. 6, 1396–1399 (1988).
5. S. P. Gabuda and S. V. Zemskov,NMR in Complex Compounds [in Russian], Nauka, Novosibirsk (1976).