Author: Papageorgiou, Nikolaos S.
-
Filippakis, Michael E.; Papageorgiou, Nikolaos S.:
A nonlinear periodic system with nonsmooth potential of indefinite sign.
(English).
Archivum Mathematicum,
vol. 42
(2006),
issue 3,
pp. 205-213
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Filippakis, Michael E.; Papageorgiou, Nikolaos S.:
Periodic solutions for differential inclusions in ${\Bbb R}^N$.
(English).
Archivum Mathematicum,
vol. 42
(2006),
issue 2,
pp. 115-123
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