“ Isolation, Purification and Identification of Active Chemical Compound Lup-20(29)-Ene-3, 28-Diol (Betulin) from Tetradium Daniellii Leaves and Study the Hypoglycemic Effect on Rabbits”. University of Thi-Qar Journal of Science, vol. 6, no. 1, Apr. 2019, pp. 54-61, https://jsci.utq.edu.iq/index.php/main/article/view/45.