AIMAN A. OBAIDAT. MODULATION OF THE MICRO-ENVIRONMENTAL PH AND ITS INFLUENCE ON THE GEL LAYER BEHAVIOR AND RELEASE OF THEOPHYLLINE FROM HYDROPHILIC MATRICES. International Journal of Pharma and Bio Sciences, [S. l.], v. 4, n. 2, p. 794–802, 2013. Disponível em: https://ijpbs.net/index.php/journal/article/view/2231. Acesso em: 3 sep. 2026.