TY  - JOUR
AU  - Nguyen Tien Zung
AU  - L. S. Polyakova
AU  - E. N. Selivanova
TI  - Topological Classification of Integrable Geodesic Flows on Orientable Two-Dimensional Riemannian Manifolds with Additional Integral Depending on Momenta Linearly or Quadratically
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 1993
SP  - 42
EP  - 56
VL  - 27
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_1993_27_3_a4/
LA  - ru
ID  - FAA_1993_27_3_a4
ER  -