%0 Journal Article
%A T. S. Trofimchuk
%T Controllability of systems that are not solvable with respect to the highest derivative
%J Diskretnyj analiz i issledovanie operacij
%D 1980
%P 74-82
%N 20
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DA_1980_20_a6/
%G ru
%F DA_1980_20_a6