M.H. AL-ABBASI, K.; قاسم. Spectrophotometric Determination of Tetracycline by Azo Dye Formation with Diazotised p-Nitroaniline-Application to Pharmaceutical Preparations and Biological Fluids. Rafidain Journal of Science, [S. l.], v. 20, n. 1, p. 61–74, 2025. DOI: 10.33899/rjs.2009.41327. Disponível em: https://rjps.uomosul.edu.iq/index.php/rsci/article/view/12326. Acesso em: 9 aug. 2025.