Aggarwal, R. C.; Bala, Rashmi; Prasad, R. L., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1983, vol. 22, # 7, p. 568 - 571
Aggarwal, R. C.; Bala, Rashmi; Prasad, R. L., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1983, vol. 22, # 7, p. 568 - 571