%0 Journal Article
%A È. Muhamadiev
%T Bounded solutions and homotopic invariants of systems of nonlinear differential equations
%J Doklady Akademii Nauk
%D 1996
%P 596-598
%V 351
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1996_351_5_a3/
%G ru
%F DAN_1996_351_5_a3