1. V. P. Feshin,Electronic Effects in Organic and Heteroorganic Molecules [in Russian], Izd. UrO RAN. Ekaterinburg (1988).
2. V. P. Feshin,Main Group Metal Chem.,20, 669 (1977).
3. V. P. Feshin and M. Yu. Kon'shin,Zh. Obshch. Khim.,67, 1841 (1997).
4. V. P. Feshin and E. V. Feshina,Khim. Geterotsikl. Soedin., No. 1, 40 (1999).
5. T. P. Das and E. L. Hahn,Nuclear Quadrupole Resonance Spectroscopy, Academic Press, New York, London (1958).