By Gallego Claudia   Lezama Oswaldo   in Communications in Algebra

ISSN:0092-7872|39|1|50-75

Taylor & Francis Ltd‎(2011)‎

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By Lezama Oswaldo   Reyes Armando   in Communications in Algebra

ISSN:0092-7872|42|3|1200-1230

Taylor & Francis Ltd‎(2014)‎

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