Abdalla, N. A., A. H. Amrailah, M. A. Chandour, E. A. Kasim, and 0 A. Farghali. “?SPECTRAL STUDIES OF BINARY AND TERNARY COMPLEXES OF SOME SULFA-DRUGS”. Biological Sciences - PJSIR, vol. 44, no. 3, June 2001, pp. 148-52, http://v2.pjsir.org/index.php/biological-sciences/article/view/1900.