Spectrophotometric Determination of Promethazine Hydrochloride and Paracetamol in Pharmaceutical Tablets. Al-Nahrain Journal of Science, [S. l.], v. 17, n. 1, p. 14–23, 2018. Disponível em: https://anjs.edu.iq/index.php/anjs/article/view/475.. Acesso em: 28 apr. 2024.