Tabarki, Sonia, Kaouther Mechergui, Soumaya Khaldi, Lamjed Toumi, and Aly Raies. “Analysis of Morphological Variability in Five Spontaneous Populations of Rubus Ulmifolius Schott in Tunisia”. Asian Journal of Biology 3, no. 2 (July 19, 2017): 1-9. Accessed February 27, 2021. https://journalajob.com/index.php/AJOB/article/view/1393.