Sianipar, A. Y., Muchlisyam, M., & Morin Sinaga, S. (2018). APPLICATION AND VALIDATION OF DERIVATIVE SPECTROPHOTOMETRIC FOR DETERMINATION LEVELS OF TERNARY MIXTURES OF PARACETAMOL, PROPYPHENAZONE, AND CAFFEINE IN TABLET DOSAGE FORM. Asian Journal of Pharmaceutical and Clinical Research, 11(13), 8–11. https://doi.org/10.22159/ajpcr.2018.v11s1.26553