Patel, R P, A H Baria, N B Pandya, and H M Tank. 2010. “Formulation Evaluation and Optimization of Stomach Specific In Situ Gel of Ranitidine Hydrochloride”. International Journal of Pharmaceutical Sciences and Nanotechnology(IJPSN) 3 (1):834-43. https://doi.org/10.37285/ijpsn.2010.3.1.6.