Khanum, Nuzhat, Tayyab Ansari, Haji Muhammad Shoaib Khan, Muhammad Sajid-ur-Rehman, Gulfishan, and Younus Khan. 2011. “Influence of PH and Temperature on Stability of Sulfamethoxazole Alone and in Combination With Trimethoprim (Co Trimoxazole)”. Asian Journal of Chemistry 24 (4):1851-54. https://asianpubs.org/index.php/ajchem/article/view/8893.