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Journal of Mathematical Analysis and Applications > 2006 > 319 > 2 > 579-603
Journal of Mathematical Analysis and Applications > 2005 > 308 > 2 > 513-531
Journal of Mathematical Analysis and Applications > 2006 > 319 > 2 > 579-603
Journal of Mathematical Analysis and Applications > 2005 > 308 > 2 > 513-531