Journal of Mathematical Analysis and Applications
Journal of Mathematical Analysis and Applications > 2007 > 334 > 1 > 382-392
Journal of Mathematical Analysis and Applications > 2009 > 359 > 1 > 159-167
Journal of Mathematical Analysis and Applications > 2007 > 334 > 1 > 382-392
Journal of Mathematical Analysis and Applications > 2009 > 359 > 1 > 159-167