%0 Journal Article
%A A. B. Vasil'eva
%T Contrast structure of step type for initial value problem
%J Fundamentalʹnaâ i prikladnaâ matematika
%D 1997
%P 359-372
%V 3
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/FPM_1997_3_2_a2/
%G ru
%F FPM_1997_3_2_a2