@article{VSPUI_2013_3_a14,
     author = {A. A. Klimakov},
     title = {Modeling an electron gun with a focusing lens system with regard for space charge distribution},
     journal = {Vestnik Sankt-Peterburgskogo universiteta. Prikladna\^a matematika, informatika, processy upravleni\^a},
     pages = {150--156},
     publisher = {mathdoc},
     number = {3},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSPUI_2013_3_a14/}
}