“DETERMINATION OF THE MOST FAVORABLE SHAPES FORTHE CYLINDRICAL CONCAVE ELECTROSTATICQUADRUPOLE LENS”, ANJS, vol. 12, no. 3, pp. 86–93, Aug. 2018, Accessed: Nov. 04, 2024. [Online]. Available: https://mail.anjs.edu.iq/index.php/anjs/article/view/1211