Michant ew; Skljarow
Zhurnal Obshchei Khimii, 1956 , vol. 26, p. 784;engl.Ausg.S.897

Kurov, G. N.; Afonin, A. V.; Svyatkina, L. I.; Dmitrieva, L. L.; Pal'chuk, E. G.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1987 , vol. 36, # 2 p. 403 - 405
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1987 , # 2 p. 444 - 447