%0 Journal Article
%A V. Yu. Ovsienko
%T Self-adjoint differential operators and curves on a~Lagrangian Grassmannian, subject to a~train
%J Matematičeskie zametki
%D 1990
%P 65-73
%V 47
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1990_47_3_a8/
%G ru
%F MZM_1990_47_3_a8