Zaidi, S. A. A.; Zaidi, S. Rehan A.; Shaheer, S. A., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1987, vol. 26, # 12, p. 1056 - 1058
Zaidi, S. A. A.; Zaidi, S. Rehan A.; Shaheer, S. A., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1987, vol. 26, # 12, p. 1056 - 1058