TY  - JOUR
AU  - V. V. Ganina
TI  - On stability of pendulm's upper equilibrium position
JO  - Matematičeskoe modelirovanie
PY  - 1998
SP  - 110
EP  - 114
VL  - 10
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MM_1998_10_2_a9/
LA  - ru
ID  - MM_1998_10_2_a9
ER  -