S. ALI, D.; ديار; M. MAHMOUD, K.; كمال. Isolation and Identification of a Pigment from Grape for Use as Acid-Base Indicator. Rafidain Journal of Science, [S. l.], v. 17, n. 7, p. 121–133, 2025. DOI: 10.33899/rjs.2006.43716. Disponível em: https://rjps.uomosul.edu.iq/index.php/rsci/article/view/11755. Acesso em: 10 aug. 2025.