“Univariate and Multivariate Optimization of Spectrophotometric Determination of Europium (III) in Pure Form and Synthetic Sample” (2017) Ibn AL-Haitham Journal For Pure and Applied Sciences, 27(2), pp. 198–210. Available at: https://jih.uobaghdad.edu.iq/index.php/j/article/view/344 (Accessed: 2 May 2024).