Shawali, Ahmad S.; Abbas, Ikhlass M.; Abdallah, Magda A., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1990, vol. 29, # 10, p. 1012 - 1016
Shawali, Ahmad S.; Abbas, Ikhlass M.; Abdallah, Magda A., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1990, vol. 29, # 10, p. 1012 - 1016