Journal of Mathematical Analysis and Applications
Journal of Mathematical Analysis and Applications > 2013 > 403 > 2 > 703-714
Journal of Mathematical Analysis and Applications > 2013 > 403 > 2 > 695-702
Journal of Mathematical Analysis and Applications > 2013 > 403 > 2 > 703-714
Journal of Mathematical Analysis and Applications > 2013 > 403 > 2 > 695-702