Multiple solutions of impulsive Sturm–Liouville boundary value problem via lower and upper solutions and variational methods
2012 ◽
Vol 387
(2)
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pp. 475-489
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2008 ◽
Vol 51
(2)
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pp. 509-527
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2009 ◽
Vol 39
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pp. 325-342
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2007 ◽
Vol 11
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pp. 975-988
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2013 ◽
Vol 54
(1)
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pp. 153-163
2013 ◽
Vol 37
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pp. 95-105
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