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Nonlinear Analysis > 2012 > 75 > 4 > 2623-2636
Journal of Differential Equations > 2010 > 249 > 9 > 2287-2315
Topology and its Applications > 2009 > 156 > 18 > 3029-3040
Nonlinear Analysis > 2012 > 75 > 4 > 2623-2636
Journal of Differential Equations > 2010 > 249 > 9 > 2287-2315
Topology and its Applications > 2009 > 156 > 18 > 3029-3040