Reddy, G. Krishna; Reddy, T. Rayapa; Jagannadham, V., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1989, vol. 28, # 1, p. 32 - 35
Reddy, G. Krishna; Reddy, T. Rayapa; Jagannadham, V., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1988, vol. 27, # 3, p. 250 - 251