%0 Journal Article
%A B. A. Kushner
%T Certain properties of quasi-numbers and operators from quasi-numbers into quasi-numbers
%J Doklady Akademii Nauk
%D 1966
%P 275-277
%V 171
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1966_171_2_a8/
%G ru
%F DAN_1966_171_2_a8