%0 Journal Article
%A V. N. Tulovskii
%A M. A. Shubin
%T On~asymptotic distribution of eigenvalues of pseudodifferential operators in~$\mathbf R^n$
%J Sbornik. Mathematics
%D 1973
%P 565-583
%V 21
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1973_21_4_a6/
%G en
%F SM_1973_21_4_a6