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Journal of Mathematical Analysis and Applications > 2005 > 311 > 2 > 635-646
Journal of Differential Equations > 2003 > 195 > 2 > 520-536
Journal of Mathematical Analysis and Applications > 2005 > 311 > 2 > 635-646
Journal of Differential Equations > 2003 > 195 > 2 > 520-536