000			00390nmm a2200133Ia 4500
008			230125s9999||||xx |||||||||||||||||und||
020			_a9780817649029
100			_aMartin Schechter
245		0	_aMinimax Systems and Critical Point Theory
250			_a2009
260			_bBirkhäuser Boston _c2009
650			_aMathematics and Statistics
856			_uhttps://doi.org/10.1007/978-0-8176-4902-9
999			_c4131 _d4131