Sriramam, K.; Sarma, B. S. R.; Kalidas, K., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, <hi>1987</hi>, vol. 26, # 12, p. 1030 - 1033
作者:Sriramam, K.、Sarma, B. S. R.、Kalidas, K.、Ravindranath, P.、Rao, R. Panduranga