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Nonlinear Analysis > 2010 > 73 > 6 > 1715-1728
Journal of Mathematical Analysis and Applications > 2000 > 248 > 2 > 520-531
Results in Mathematics > 2000 > 38 > 1-2 > 9-17
Nonlinear Analysis > 2010 > 73 > 6 > 1715-1728
Journal of Mathematical Analysis and Applications > 2000 > 248 > 2 > 520-531
Results in Mathematics > 2000 > 38 > 1-2 > 9-17