By Biasi Carlos   Mattos* Denise   in Bulletin of the Brazilian Mathematical Society

ISSN:1678-7544|37|1|127-137

Springer Publishing Company ‎(2006)‎

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By Biasi Carlos   de Mattos Denise   Santos Edivaldo L. Dos   in Geometriae Dedicata

ISSN:0046-5755|107|1|101-110

Springer Publishing Company ‎(2004)‎

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