Ogibin, Yu. N.; Molokanov, A. N.; Nikishin, G. I.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1988 , vol. 37, # 12 p. 2536 - 2538
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1988 , # 12 p. 2813 - 2815