1. V. S. Burmasov, G. G. Dolgov-Savel'ev, B. A. Knyazev, and E. P. Fokin, Zh. Prikl. Spektrosk., 19, 545 (1973).
2. R. P. Shishkina, L. N. Shchegoleva, and L. V. Éktova, Izv. Sib. Otd. Akad. Nauk SSSR, Ser. Khim. Nauk, No. 14, 62 (1971).
3. R. P. Shiskina, L. V. Éktova, and E. P. Fokin, Izv. Sib. Otd. Akad. Nauk SSSR, Ser. Khim. Nauk, No. 14, 115 (1977).
4. D. Martin and H. G. Hauthal, Dimethylsulfoxid, Akademie-Verlag, Berlin (1971), pp. 88 and 317.
5. E. F. Wesp and W. R. Brode, J. Am. Chem. Soc., 56, 1037 (1934).