BATRAKOV, K.; SYTOVA, S. Mathematical modelling of multiwave volume free electron laser: Basic principles and numerical experiments. Mathematical Modelling and Analysis, [S. l.], v. 11, n. 1, p. 13–22, 2006. DOI: 10.3846/13926292.2006.9637298. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/9593. Acesso em: 27 jun. 2025.