Spectrophotometric Method for the Determination of Tetracycline and Doxycycline by Oxidizing Coupling Reaction with 4-aminoantipyrine. Ibn AL-Haitham Journal For Pure and Applied Sciences, [S. l.], v. 28, n. 3, p. 154–168, 2017. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/150.. Acesso em: 2 may. 2024.