الهوشي . ل. ., and سليمان . ي. . “Preparation and Characterization of Bio-Adhesive Metformin Hydrochloride Tablets (model Drug)”. Tishreen University Journal -Medical Sciences Series, vol. 43, no. 6, Jan. 2022, pp. 247-6, https://journal.tishreen.edu.sy/index.php/hlthscnc/article/view/11554.