TY  - JOUR
AU  - V. Yu. Ovsienko
TI  - Classification of third-order linear differential equations and symplectic sheets of the Gel'fand--Dikii bracket
JO  - Matematičeskie zametki
PY  - 1990
SP  - 62
EP  - 70
VL  - 47
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1990_47_5_a8/
LA  - ru
ID  - MZM_1990_47_5_a8
ER  -