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标题: On the existence of positive solutions for the second-order [打印本页]

作者: ly382 时间: 2015-5-23 10:08
标题: On the existence of positive solutions for the second-order

题名	On the existence of positive solutions for the second-order
链接	http://www.sciencedirect.com/science/article/pii/S0893965915001573

作者: wwjjdd 时间: 2015-5-23 10:08
http://1000eb.com/14mjm

作者: wwjjdd 时间: 2015-5-23 10:08
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