S K, S. et al. 2011. Design and Evaluation of Sustained Release Solid Dispersions of Verapamil Hydrochloride. International Journal of Pharmaceutical Sciences and Nanotechnology(IJPSN). 3, 4 (Feb. 2011), 1252–1262. DOI:https://doi.org/10.37285/ijpsn.2010.3.4.10.