AKBAR, M. H.; HARMITA; SURYADI, H. PREPARATION AND CHARACTERIZATION OF HYDROXYPROPYL METHYLCELLULOSE PRODUCED FROM α-CELLULOSE BETUNG BAMBOO (DENDROCALAMUS ASPER) AND IT’S EVALUATION ON GEL FORMULATION. International Journal of Pharmacy and Pharmaceutical Sciences, v. 12, n. 8, p. 156-165, 25 Jun. 2020.