Verma, Navneet, et al. “Formulation and Evaluation of Chitosan Containing Mucoadhesive Buccal Patches of Metoprolol Succinate”. Journal of Drug Delivery and Therapeutics, vol. 6, no. 2, Mar. 2016, pp. 14-20, https://doi.org/10.22270/jddt.v6i2.1223.