TY  - JOUR
AU  - Antonio Iannizzotto
TI  - Three periodic solutions for an
 ordinary differential inclusion with two parameters
JO  - Annales Polonici Mathematici
PY  - 2012
SP  - 89
EP  - 100
VL  - 103
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ap103-1-7/
DO  - 10.4064/ap103-1-7
LA  - en
ID  - 10_4064_ap103_1_7
ER  -