Search results
Journal of Mathematical Analysis and Applications > 2015 > 428 > 2 > 1368-1376
Nonlinear Analysis > 2012 > 75 > 8 > 3552-3557
Journal of Mathematical Analysis and Applications > 2015 > 428 > 2 > 1368-1376
Nonlinear Analysis > 2012 > 75 > 8 > 3552-3557