Gehlot, Valentina, et al. “MOST OF THE HELICOBACTER PYLORI ISOLATES ARE RESISTANT TO LEVOFLOXACIN IN NORTH INDIA”. International Journal of Pharmacy and Pharmaceutical Sciences, vol. 8, no. 1, Jan. 2016, pp. 454-6, https://www.journals.innovareacademics.in/index.php/ijpps/article/view/9515.