Babaamer, Z., L. SEkhri, H. Al-Jaber, M. Al-Qudah, and M. Abu Zarga. “Extraction and Identification of Triterpenoids from Pergularia Tomentosa L”. Annals of Science and Technology, Vol. 5, no. 1, May 2013, p. 5, https://journals.univ-ouargla.dz/index.php/AST/article/view/882.