By Lavery W.J.   in Journal of Mathematical Analysis and Applications

ISSN:0022-247X|223|2|397-417

Academic Press‎(1998)‎

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By Nieto J.J.   Lavery W.J.   in Journal of Mathematical Analysis and Applications

ISSN:0022-247X|210|1|231-240

Academic Press‎(1997)‎

Access to resources Favorite 13.084742