Abser, M N; Hashem, M A; Kabir, S E, Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1991, vol. 30, # 11, p. 974 - 975
Abser, M N; Hashem, M A; Kabir, S E, Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1991, vol. 30, # 11, p. 974 - 975