By Bárcenas Diómedes   Echandía Ventura   in Quaestiones Mathematicae

ISSN:1727-933X|25|1|13-18

Taylor & Francis Ltd‎(2002)‎

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By Bárcenas Diómedes   Sánchez Luisa   in Quaestiones Mathematicae

ISSN:1727-933X|32|3|307-319

Taylor & Francis Ltd‎(2009)‎

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By Bárcenas Diómedes   Gurariy Vladimir   Sánchez Luisa   Ullán Antonio   in Quaestiones Mathematicae

ISSN:1727-933X|27|2|137-145

Taylor & Francis Ltd‎(2004)‎

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