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Journal of Mathematical Analysis and Applications > 2016 > 443 > 1 > 265-294
Journal of Mathematical Analysis and Applications > 2016 > 434 > 2 > 1826-1851
Nonlinear Analysis > 2011 > 74 > 17 > 6640-6661
Journal of Differential Equations > 2007 > 242 > 2 > 269-286