1.
T. Daood L, H. Ahmed H, M. Omar K. Spectrophotometric Determination of Yttrium with Pyrocatechol Violet Reagent – Application to Water. RSCI [Internet]. 2010 Sep. 1 [cited 2025 Sep. 28];21(6):18-30. Available from: https://jamh.uomosul.edu.iq/index.php/rsci/article/view/47710