S. OTHMAN, N.; M. KHALAF, N. Determination of Doxycycline as Pure and in Pharmaceutical Preparation (Capsule) Using 4-Aminoantipyrine in Presence of Potassium Periodate. Rafidain Journal of Science, [S. l.], v. 31, n. 4, p. 15–28, 2022. DOI: 10.33899/rjs.2022.176069. Disponível em: https://edusj.uomosul.edu.iq/index.php/rsci/article/view/47466. Acesso em: 10 sep. 2025.