A. K. Ahmad, K. K. Ajeel, and B. H. Hamad, “DESIGN OF AN ELECTROSTATIC IMMERSION LENS USING THECHARGE DENSITY METHOD”, Al-Nahrain J. Sci., vol. 13, no. 1, pp. 60–68, Mar. 2010, Accessed: Oct. 24, 2026. [Online]. Available: https://www.anjs.edu.iq/index.php/anjs/article/view/1140