Bajaj, Rakesh; Jain, C. L.; Gupta, S. K., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1992, vol. 31, # 11, p. 892 - 895
Bajaj, Rakesh; Jain, C. L.; Gupta, S. K., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1992, vol. 31, # 11, p. 892 - 895