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International Electronic Journal of Algebra
23-38
International Electronic Journal of Algebra
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International Electronic Journal of Algebra
International Electronic Journal of Algebra
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International Electronic Journal of Algebra
S. Ebrahimi Atani, M. Sedghi Shanbeh Bazari
International Electronic Journal of Algebra
International Electronic Journal of Algebra
Rogelio Fernandez-Alonso, Dolors Herbera
International Electronic Journal of Algebra