A. Al-Uzri, W. 2015. Spectrophotometric Determination of Procaine Hydrochloride in Pharmaceutical Preparations via Diazotization-Coupling Reaction with Phenol. Asian Journal of Chemistry. 27, 12 (Sep. 2015), 4449–4453. DOI:https://doi.org/10.14233/ajchem.2015.19169.