A. Mohammed, Amjad, and Mozahim K. Al-Mallah. “Determination of β-Carotene in Carrot (Daucus Carota L.) Plants Regenerated from Stems Callus”. Rafidain Journal of Science 24, no. 5 (May 1, 2013): 27–36. Accessed September 15, 2025. https://ojs.uomosul.edu.iq/index.php/rsci/article/view/47212.