Vijayakumar; Iyengar, Pushpa; Nagendrappa, Gopalpur; Prakash, B. S. Jai
Journal of the Indian Chemical Society, 2005 , vol. 82, # 10 p. 922 - 925

Chepaikin, E. G.; Bezruchenko, A. P.; Benjeu, A.; Joo, A.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1989 , vol. 38, # 3.2 p. 669
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1989 , # 3 p. 743