Geetha, C. N.; Rani, Indra; Singh, H. B., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1985, vol. 24, # 3, p. 236 - 237
Geetha, C. N.; Rani, Indra; Singh, H. B., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1985, vol. 24, # 3, p. 236 - 237