000			00372nmm a2200133Ia 4500
008			230125s9999||||xx |||||||||||||||||und||
020			_a9780387766584
100			_aWenming Zou
245		0	_aSign-Changing Critical Point Theory
250			_a2009
260			_bSpringer US _c2008
650			_aMathematics and Statistics
856			_uhttps://doi.org/10.1007/978-0-387-76657-7
999			_c3774 _d3774