CHIGWANDA, R.; CHINOPFUKUTWA, P. Evaluation of a Hydrophobic–Hydrophilic (Hydrogenated Castor Oil-Gum Tragacanth) Matrix using Propranolol Hydrochloride as Test Drug. The East and Central African Journal of Pharmaceutical Sciences, v. 10, n. 3, p. 68-71, 14 nov. 2018.