Keshari, B. N.; Mishra, L. K., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1981, vol. 20, # 9, p. 883 - 887
Keshari, B. N.; Mishra, L. K., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1981, vol. 20, # 9, p. 883 - 887