TY  - JOUR
AU  - L. Tclaf
TI  - On condition of Jacobi positivity of second variation
JO  - Uchenye Zapiski Moskovskogo Gosudarstvennogo Universiteta
PY  - 1950
SP  - 116
EP  - 125
VL  - 146
IS  - 146
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/UZMU_1950_146_146_a4/
LA  - ru
ID  - UZMU_1950_146_146_a4
ER  -