Velamakanni, Satish Ramanatham, and Venkateswarlu Padala. 2017. “ESTIMATION OF ETONOGESTREL IN HUMAN PLASMA BY USING LC–ESI–MS/MS METHOD”. International Journal of Pharmacy and Pharmaceutical Sciences 9 (12):147-54. https://doi.org/10.22159/ijpps.2017v9i12.20946.