@article{ZVMMF_1980_20_3_a14,
     author = {Yu. I. Mokin},
     title = {An algorithm for calculation of emission current density in a beam focusing problem},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {671--681},
     publisher = {mathdoc},
     volume = {20},
     number = {3},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1980_20_3_a14/}
}