Al-Ghabsha, Thabit, ثابت, Theiaa Al-Sabha, ضیاء, Amal Saeed, and أمل. “Indirect Spectrophotometric Determination of Cephalexin and Paracetamol by Cu-NTA Complex in Aqueous Solution”. Journal of Education and Science (JES) 17, no. 3 (June 1, 2005): 1–15. Accessed August 4, 2025. https://rjps.uomosul.edu.iq/index.php/edusj/article/view/18167.