A.B. LOKHANDE et al. 2013. FABRICATION AND IN VITRO EVALUATION OF METFORMIN ENTRAPPED SUSTAINED RELEASE AMMONIO METHACRYLATE COPOLYMER MICROPARTICLES PREPARED BY NON-AQUEOUS EMULSIONSOLVENT EVAPORATION TECHNIQUE. International Journal of Pharma and Bio Sciences. 4, 3 (Sep. 2013), 444–453.