TY  - JOUR
AU  - Hayashi, Makoto
TI  - An improvement of the non-existence region for limit cycles of the Bogdanov-Takens system
JO  - Archivum mathematicum
PY  - 2020
SP  - 199
EP  - 206
VL  - 56
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.5817/AM2020-4-199/
DO  - 10.5817/AM2020-4-199
LA  - en
ID  - 10_5817_AM2020_4_199
ER  -