“(N, N, N’, N’-Tetramethy -P- Phebylebediamine Dihydrochloride) As a New Analytical Reagent for Spectrophotometric Determination of Iron (III). (Fadhil M. Najib and Nawzad N. Ahmad)”. Journal of Zankoy Sulaimani - Part A 1, no. 1 (May 1, 1997): 26–43. Accessed March 3, 2024. https://jzs.univsul.edu.iq/index.php/jzs/article/view/jzs-10013.