@article{DE_1989_25_7_a11,
     author = {S. A. Vavilov and D. A. Ovsyannikov},
     title = {Applicability of one-particle approximation in a problem of the evolution of beams of charged particles in a longitudinal magnetic field},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1183--1187},
     publisher = {mathdoc},
     volume = {25},
     number = {7},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1989_25_7_a11/}
}