Mohammed, H. J., D.S. Hassan, and A. Hmood. “Spectrophotometric Determination of Nirite By The Diazotization Coupling With Aniline and 4,6 Dihydroxy-2 Mercaptopyrimidine”. Ibn AL-Haitham Journal For Pure and Applied Sciences 21, no. 2 (September 23, 2017): 102–109E. Accessed March 14, 2025. https://jih.uobaghdad.edu.iq/index.php/j/article/view/1391.