R. F. Al beea, H. A. Abbas, R. M. M. Taqi, D. A. Abdulabbas, and M. A. Abed, “Estimation of the Folic Acid Using Zero Order, Area Under Curve and First Derivative Spectrophotometric Methods in Pure and Marketed Tablet Formulations”, Al-Nahrain J. Sci., vol. 20, no. 3, pp. 34–41, Sep. 2017, Accessed: May 22, 2026. [Online]. Available: https://anjs.edu.iq/index.php/anjs/article/view/101