E. Al-Abdullah, Abdullah, and Muna A. Al-Khashab. “The Confront Electrodes Faces Curvature Effect on the Electron Gun Performance”. Rafidain Journal of Science 23, no. 3 (April 1, 2012): 138–147. Accessed September 28, 2025. https://jwups.uomosul.edu.iq/index.php/rsci/article/view/46925.