00916nmm a2200253 i 4500991000523929707536cr nn 008mamaa090527s2009 us j eng d9780817649029b13870117-39ule_instDip.to MatematicaengSchechter, Martin13643Minimax systems and critical point theory[e-book] /by Martin SchechterBoston :Birkhäuser,2009v.: digitalDifferential equations, partialFunctional analysisSpringer eBookshttp://dx.doi.org/10.1007/978-0-8176-4902-9An electronic book accessible through the World Wide Web.b1387011703-03-2214-01-10991000523929707536Minimax systems and critical point theory230253UNISALENTOle01314-01-10m@ -engus 00