Dhuha N. Ali AL-ghanam and Mohammed S. Sheet AL-Enizzi (2022) “Spectrophotometric determination of methyldopa by oxidative coupling reactions using 2,4 -dinitrophenylhydrazine reagent”, Tikrit Journal of Pure Science, 27(5), pp. 16–22. doi: 10.25130/tjps.v27i5.10.