MEDINA-LOPEZ, J.R., GONZALEZ-SALAZAR, O.A. and CONTRERAS-JIMENEZ, J.M. 2022. SIMULTANEOUS QUANTIFICATION OF ACETYLSALICYLIC ACID AND CAFFEINE IN TABLETS BY FIRST-ORDER DERIVATIVE SPECTROSCOPY. International Journal of Applied Pharmaceutics. 14, 4 (Jul. 2022), 200–204. DOI:https://doi.org/10.22159/ijap.2022v14i4.44998.