Sohrabi, M.R., M. Davallo, F. Tadayyon, F. Nabipoor, and A. Khamneifar. 2016. “Simultaneous Determination of Acetyl Salicylic Acid and Acetaminophen in Acetaminophen-Caffeine-Aspirin (ACA) Tablets by FT-IR ATR Spectrometry With Multivariate Calibration Data Treatment”. Asian Journal of Chemistry 17 (1):541-47. https://asianpubs.org/index.php/ajchem/article/view/19830.