Gangopadhyay, S.; Sen, S.; Sen, B. K., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1981, vol. 20, # 3, p. 258 - 262
Gangopadhyay, S.; Sen, S.; Sen, B. K., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1981, vol. 20, # 3, p. 258 - 262