N. WADIA, D., & T. DESAI, H. (2012). ULTRA PERFORMANCE LIQUID CHROMATOGRAPHY (UPLC) METHOD DEVELOPMENT AND VALIDATION FOR THE SIMULTANEOUS ESTIMATION OF ETOPHYLLINE AND THEOPHYLLINE IN PHARMACEUTICAL DOSAGE FORM: Pharmaceutical Science-Analytical Chemistry. International Journal of Life Science and Pharma Research, 2(3), P19-P24. Retrieved from https://www.ijlpr.com/index.php/journal/article/view/245