%0 Journal Article
%A K. K. Golovkin
%T Certain conditions for the smoothness of a function of several variables and estimates of convolution operators
%J Doklady Akademii Nauk
%D 1961
%P 524-527
%V 139
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1961_139_3_a1/
%G ru
%F DAN_1961_139_3_a1