Journal of Mathematical Analysis and Applications
Journal of Mathematical Analysis and Applications > 2014 > 415 > 2 > 760-778
Journal of Mathematical Analysis and Applications > 2014 > 415 > 2 > 644-660
Journal of Mathematical Analysis and Applications > 2014 > 415 > 2 > 760-778
Journal of Mathematical Analysis and Applications > 2014 > 415 > 2 > 644-660