H. Othman, N., نبيل, N. S. Othman, and نبيل. “Spectrophotometric Determination of Teicoplanin via Coupling With Diazotized P-Nitroaniline”. Rafidain Journal of Science, vol. 24, no. 9, June 2025, pp. 42-51, doi:10.33899/rjs.2013.78758.