Mohammad, M. Y. ., Abdullah, M. S. ., & Sabir, S. S. . (2019). Simultaneous Determination of Atenolol and Amlodipine Using Second Derivative Spectroscopy. Polytechnic Journal, 9(2), 25-29. https://doi.org/10.25156/ptj.v9n2y2019.pp25-29