@article{DAN_1965_162_6_a14,
     author = {A. D. Dymnikov and T. Ya. Fishkova and S. Ya. Yavor},
     title = {Spherical aberration of a combined quadrupole lens with a rectangular field distribution},
     journal = {Doklady Akademii Nauk},
     pages = {1265--1268},
     publisher = {mathdoc},
     volume = {162},
     number = {6},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_162_6_a14/}
}