@article{IVP_2015_23_3_a7,
     author = {E. S. Semenov and O. P. Plankin and R. M. Rozental'},
     title = {Development of methods of gyrotrons electron-optics systems with axial symmetry distortion},
     journal = {Izvestiya VUZ. Applied Nonlinear Dynamics},
     pages = {94--105},
     publisher = {mathdoc},
     volume = {23},
     number = {3},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVP_2015_23_3_a7/}
}