De, P. K., S. K. Dey, A. Samanta, K. Roy, S. Ghosh, and A. Ghosh. ā€œFORMULATION AND IN VITRO EVALUATION OF OIL ENTRAPPED BUOYANT BEADS FOR STOMACH SPECIFIC DELIVERY OF METRONIDAZOLEā€. International Journal of Pharmacy and Pharmaceutical Sciences, vol. 6, no. 9, Sept. 2014, pp. 407-10, https://journals.innovareacademics.in/index.php/ijpps/article/view/2266.