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100   $a20000920d1989----km-y0itay50------ba
101  1$aeng
200 1 $aMinimax Result of Lusternik - Schnirelman Type and Applications$ePart 2 of the Proceedings of the NATO ASI "Variational Methods in Nonlinear Problems "$fIvar Ekeland, Andrzej Szulkin.
210   $aMontreal$cLes Presses de l'Université de Montréal$d1989.
225 1 $aSéminaire de Mathématiques Supérieures$v107
700  1$aEkeland,$bIvar$030998
702  1$aSzulkin,$bAndrzej
801  0$aIT$bUNINA$gRICA$2UNIMARC
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996   $aMinimax Result of Lusternik - Schnirelman Type and Applications$9382511
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