Cirulis, T., H. Kalis, and O. Lietuvietis. “Comparative Analysis by Means of Finite Differences and DM Methods for Linearized Problem of Gyrotrons”. Mathematical Modelling and Analysis 9, no. 2 (June 30, 2004): 127-136. Accessed December 2, 2024. https://mma.vgtu.lt/index.php/MMA/article/view/9715.