Mohammed, A. K., S. B. Dikran, and M. Abdul Sattar Alubydi. “Univariate and Simplex Optimization for The Analysis of Diphenhydramine-HCl Through Ion-Pair Formation”. Ibn AL-Haitham Journal For Pure and Applied Sciences 24, no. 1 (December 29, 2016). Accessed May 1, 2025. https://www.jih.uobaghdad.edu.iq/index.php/j/article/view/864.