J. Harbi Hussien Alsaadi, “ 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”, jsci, vol. 6, no. 1, pp. 54-61, Apr. 2019.