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Nonlinear Analysis: Real World Applications > 2011 > 12 > 4 > 2304-2318
Journal of Differential Equations > 2007 > 235 > 2 > 397-417
Nonlinear Analysis: Real World Applications > 2011 > 12 > 4 > 2304-2318
Journal of Differential Equations > 2007 > 235 > 2 > 397-417