Rozhkov, I. N.; Chaplina, I. V.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1991 , vol. 40, # 12 p. 2451 - 2456
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1991 , vol. 40, # 12 p. 2810 - 2815