A. AL-LUHAIBY, R.; S. AL-ENIZZI, M. Spectrophotometric Determination of Some Phenolic Compounds Via Oxidative Coupling Reaction Using 4-Aminoantipyrine. College of Basic Education Research Journal, [S. l.], v. 19, n. 1, p. 763–780, 2023. DOI: 10.33899/berj.2023.178137. Disponível em: https://edusj.uomosul.edu.iq/index.php/berj/article/view/39663. Acesso em: 26 oct. 2025.