Ikram K. Othman, and Theia’a N. Al-Sabha , trans. “Spectrophotometric Determination of Catecholamine Containing Drugs Using Calcon Dye”. Pakistan Journal of Analytical & Environmental Chemistry 23, no. 2 (November 1, 2024): 247–258. Accessed July 7, 2025. http://pjaec.pk/index.php/pjaec/article/view/36.