%0 Journal Article %A B. B. Levchenko %T Fields of a~relativistic beam of charged particles between parallel %J Teoretičeskaâ i matematičeskaâ fizika %D 2020 %P 311-320 %V 203 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_2020_203_2_a10/ %G ru %F TMF_2020_203_2_a10