%0 Journal Article
%A K. A. Dolmatova
%A V. M. Kel'man
%T A longitudinal field $\beta$-spectrometer, whose spherical aberration is compensated by a transverse magnetic field
%J Doklady Akademii Nauk
%D 1957
%P 1244-1247
%V 113
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1957_113_6_a15/
%G ru
%F DAN_1957_113_6_a15