Sandhu, S. S.; Arshad, M.; Parmar, S. S., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1981, vol. 20, # 12, p. 1200 - 1203
Sandhu, S. S.; Arshad, M.; Parmar, S. S., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1981, vol. 20, # 12, p. 1200 - 1203