OPTIMIZATION AND VALIDATION OF MODULATED RELEASE FORMULATION OF RANITIDINE HCL BY RESPONSE SURFACE METHODOLOGY. International Journal of Pharmaceutical Sciences and Drug Research, [S. l.], v. 3, n. 1, p. 13–18, 2011. DOI: 10.25004/IJPSDR.2011.030103. Disponível em: https://ijpsdronline.com/index.php/journal/article/view/100.. Acesso em: 17 oct. 2025.