ALI , E. .; MAHMOOD , H. . A selective quantitative assay of p-phenylenediamine in henna and hair dyes. Journal of Wahj Al-Ulom for Pure Sciences, [S. l.], v. 1, n. 2, 2025. DOI: 10.33899/jwups.v1i2.21904. Disponível em: https://rjps.uomosul.edu.iq/index.php/jwups/article/view/21904. Acesso em: 4 aug. 2025.