TY  - JOUR
AU  - V. Yu. Ovsienko
TI  - Self-adjoint differential operators and curves on a~Lagrangian Grassmannian, subject to a~train
JO  - Matematičeskie zametki
PY  - 1990
SP  - 65
EP  - 73
VL  - 47
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1990_47_3_a8/
LA  - ru
ID  - MZM_1990_47_3_a8
ER  -