Pietraś, Rafał, et al. “Application of SHS GC-MS Method for the Identification of Paracetamol Impurities in the Selected Pharmaceutical Formulations”. Current Issues in Pharmacy and Medical Sciences, vol. 25, no. 3, July 2012, pp. 303-5, https://doi.org/10.12923/j.2084-980X/25.3/a.18.