Islam, M., and R.- ul Jalil. “Effects of Release Modifier and Annealing on Polyvinyl Acetate-Polyvinyl Pyrrolidone Microspheres Containing Diclofenac Sodium”. Dhaka University Journal of Pharmaceutical Sciences, Vol. 12, no. 1, Sept. 2013, pp. 41-50, doi:10.3329/dujps.v12i1.16299.