“Potentiometric Analysis of Samarium Ion in Aqueous Solution Employing Selective Electrode Based on Crown Ethers - Samarium Picrate Complexes in a PVC Membrane”. Ibn AL-Haitham Journal For Pure and Applied Sciences 19, no. 3 (December 29, 2017): 117–133A. Accessed May 13, 2024. https://jih.uobaghdad.edu.iq/index.php/j/article/view/1653.