TY  - JOUR
AU  - Kyritsi, Sophia Th.
AU  - Papageorgiou, Nikolaos S.
TI  - Multiple Solutions for Nonlinear Periodic Problems
JO  - Canadian mathematical bulletin
PY  - 2013
SP  - 366
EP  - 377
VL  - 56
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-2011-154-5/
DO  - 10.4153/CMB-2011-154-5
ID  - 10_4153_CMB_2011_154_5
ER  -