Gyrotron mode competition calculations: Investigations on the choice of numerical parameters - Kern, S.; Avramides, K. A.; Beringer, M.H.; Dumbrajs, O.; Liu, Y-H (33rd International Conference on Infrared and Millimeter Waves and the 16th International Conference on Terahertz Electronics, 2008, IRMMW-THz 2008, 2008)