00904nam0-22003011i-450-9900011157404033210-521-44025-4000111574FED01000111574(Aleph)000111574FED0100011157420000920d1993----km-y0itay50------baengDuality and Perturbation Methods in Critical Point TheoryNassif GhoussoubCambridgeCambridge University Press1993Cambridge tracts in mathematics107Analisi funzionaleAlgebre astratte517.00//517.36Ghoussoub,Nassif53450ITUNINARICAUNIMARCBK99000111574040332114A-18719201FI1FI1Duality and Perturbation Methods in Critical Point Theory337370UNINAING01