%0 Journal Article
%A V. V. Veremenyuk
%T Criterion for upper semicontinuity of the $i$th Lyapunov exponent of a linear Hamiltonian system of differential equations
%J Differencialʹnye uravneniâ
%D 1982
%P 371-383
%V 18
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1982_18_3_a0/
%G ru
%F DE_1982_18_3_a0