S. OTHMAN, N.; عثمان. Spectrophotometic Determination of some Sulphonamides in Aqueous Solution Via Azo- Dye Formation Reaction. Journal of Education and Science (JES), [S. l.], v. 17, n. 2, p. 32–40, 2005. DOI: 10.33899/edusj.2005.81308. Disponível em: https://rjps.uomosul.edu.iq/index.php/edusj/article/view/17631. Acesso em: 4 aug. 2025.