A. Al-Khashab, Muna, and Thamer J. Al-Khaldey. “The Effect of Coils Area’s Ratio and Their Separated Distance on the Optical Performance of the Condenser-Objective Magnetic Lens”. Rafidain Journal of Science 27, no. 1 (March 1, 2018): 158–167. Accessed September 9, 2025. https://ojs.uomosul.edu.iq/index.php/rsci/article/view/46497.