Sharmin, N., M. Elias-Al-Mamun, M. S. Islam, and R.- ul Jalil. “Preparation and Characterization of Lidocaine Double Layer Buccal Tablet Using Mucoadhesive Carbopol® Polymers”. Dhaka University Journal of Pharmaceutical Sciences, vol. 10, no. 1, Mar. 2012, pp. 29-34, doi:10.3329/dujps.v10i1.10012.