By Ojeda M.M.   Sosa V.   in International Journal of Mathematical Education in Science and Technology

ISSN:1464-5211|33|2|199-211

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By Ojeda M.M.   Sahai H.   in International Journal of Mathematical Education in Science and Technology

ISSN:1464-5211|33|6|819-828

Taylor & Francis Ltd‎(2002)‎

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By Ojeda M.M.   Sahai H.   in International Journal of Mathematical Education in Science and Technology

ISSN:1464-5211|34|1|57-63

Taylor & Francis Ltd‎(2003)‎

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By Sahai H.   Ojeda M. M.   in International Journal of Mathematical Education in Science and Technology

ISSN:1464-5211|30|2|187-196

Taylor & Francis Ltd‎(1999)‎

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