TY  - JOUR
AU  - L. Gavrilov
TI  - On the Number of Limit Cycles Which Appear by Perturbation of Two-Saddle Cycles of Planar Vector Fields
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 2013
SP  - 12
EP  - 27
VL  - 47
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_2013_47_3_a1/
LA  - ru
ID  - FAA_2013_47_3_a1
ER  -