%0 Journal Article
%A E. S. Usachev
%T Asymptotic properties and the approximation of stochastic models of teaching
%J Doklady Akademii Nauk
%D 1968
%P 282-284
%V 182
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1968_182_2_a11/
%G ru
%F DAN_1968_182_2_a11