“Determination of Copper, Chromium, Nickel, and Lead in Mozzarella Cheese by Flame Atomic Absorption Spectrometry Using Ultrasonic-Assisted Extraction”. Academic Journal of International University of Erbil 2, no. 01 (January 20, 2025): 27–34. Accessed July 1, 2025. https://ojs.cihanrtv.com/index.php/public/article/view/7.