Kabir, Shariff E.; Howlader, Mohammad B. H., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1989, vol. 28, # 1, p. 47 - 50
Kabir, Shariff E.; Howlader, Mohammad B. H., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1989, vol. 28, # 1, p. 47 - 50