Formulation parameters and release mechanism of theophylline loaded ethyl cellulose microspheres: effect of different dual surfactant ratios.
Thakare M, Israel B, Garner ST, Ahmed H, Garner P, Elder D, Price JC, Capomacchia AC. Formulation parameters and release mechanism of theophylline loaded ethyl cellulose microspheres: effect of different dual surfactant ratios. Pharm Dev Technol. 2013 Sep-Oct; 18(5):1213-9.