Lowalekar, Rohit, and Lalit Singh Chauhan. 2016. “APPLICATION OF DESIGN OF EXPERIMENTS TO OPTIMIZE GASTRO RETENTIVE DRUG DELIVERY SYSTEMS FOR CIPROFLOXACIN HCL AND METRONIDAZOLE”. Asian Journal of Pharmaceutical Research and Development 4 (3):1-9. https://ajprd.com/index.php/journal/article/view/283.