Al-Saidi, K.H. and Yonis, M.S. (2018) “Simultaneous Determination of Sulphamethoxazole and Trimethoprim in Binary Mixtures and in Tablet Using Derivative Spectrophotometry”, Al-Nahrain Journal of Science, 18(1), pp. 46–54. Available at: https://www.anjs.edu.iq/index.php/anjs/article/view/348 (Accessed: 24 October 2026).