TY  - JOUR
AU  - P. V. Anikeyev
TI  - On symmetry fields of second degree in the momenta of geodesic flows on a two-dimensional sphere
JO  - Vestnik Moskovskogo universiteta. Matematika, mehanika
PY  - 1997
SP  - 29
EP  - 32
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VMUMM_1997_4_a8/
LA  - ru
ID  - VMUMM_1997_4_a8
ER  -