D. S. Ichsan and M. . Ebtasari, “Identification of Ephedrine and Pseudoephedrine in Solid Dosages using Ultra Performance Liquid Chromatography and High-Performance Liquid Chromatography Methods”, ERUDITIO - Indonesian J. of Food and Drugs Saf., vol. 3, no. 2, pp. 99–106, Nov. 2023.