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ISSN:0001-8708|124|2|332-333

Academic Press‎(1996)‎

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By Constantinescu A.   Pournaki M. R.   Seyed Fakhari S. A.   Terai N.   Yassemi S.   in Communications in Algebra

ISSN:0092-7872|43|1|143-157

Taylor & Francis Ltd‎(2015)‎

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