On the number of positive solutions for a four-point boundary value problem with generalized Laplacian
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2019 ◽
Vol 07
(07)
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pp. 1463-1472
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2014 ◽
Vol 19
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pp. 2820-2827
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pp. 194-201
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2006 ◽
Vol 182
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pp. 258-268
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Vol 38
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Vol 22
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pp. 65-74
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2007 ◽
Vol 186
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pp. 1129-1136
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