R. J. Al-Ashow, رشا, N. S. Othman, and نبيل, “Spectrophotometric Determination of Tetracycline by Coupling with Diazotised 4-Aminoantipyrine in Presence of Cetylpyridinium Chloride”, RSCI, vol. 23, no. 3, pp. 72–84, Jun. 2025.