FORMULATION AND EVALUATION OF THEOPHYLLINE CONTROLLED RELEASE MATRIX TABLETS USING HPMC AS POLYMER. International Research Journal of Pharmacy, [S. l.], v. 3, n. 7, p. 131–134, 2012. Disponível em: https://irjponline.org/index.php/irjp/article/view/2511. Acesso em: 24 sep. 2026.