A multiplicity result for periodic solutions to higher-order ordinary differential equations via the method of upper and lower solutions.
Lee, Yong-Hoon
Journal of Inequalities and Applications [electronic only], Tome 2 (1998), p. 307-323 / Harvested from The Electronic Library of Mathematics
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Publié le : 1998-01-01
DOI : https://doi.org/10.1155/S1025583498000204
EUDML-ID : urn:eudml:doc:119954 
@article{01248235,
     title = {A multiplicity result for periodic solutions to higher-order ordinary differential equations via the method of upper and lower solutions.},
     journal = {Journal of Inequalities and Applications [electronic only]},
     volume = {2},
     year = {1998},
     pages = {307-323},
     doi = {10.1155/S1025583498000204},
     zbl = {0922.34038},
     language = {en},
     url = {http://dml.mathdoc.fr/item/01248235}
}

Lee, Yong-Hoon. A multiplicity result for periodic solutions to higher-order ordinary differential equations via the method of upper and lower solutions.. Journal of Inequalities and Applications [electronic only], Tome 2 (1998) pp. 307-323. doi : 10.1155/S1025583498000204. http://gdmltest.u-ga.fr/item/01248235/