“ Effect of Chemical Mutagenic Treatment (EMS) on Some Biochemical Characteristics in Burley 21 and Virginia VK51 Tobacco Cultivars under Drought Stress Conditions”. Latakia University Journal -Biological Sciences Series, vol. 44, no. 6, Feb. 2023, pp. 87-100, https://journal.latakia-univ.edu.sy/index.php/bioscnc/article/view/13375.