By Ollerton R. L.   in International Journal of Mathematical Education in Science and Technology

ISSN:1464-5211|37|6|754-756

Taylor & Francis Ltd‎(2006)‎

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By Ollerton R.L.   Shannon A.G.   in International Journal of Mathematical Education in Science and Technology

ISSN:1464-5211|34|1|135-143

Taylor & Francis Ltd‎(2003)‎

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By Ollerton R.L.   Iskov G.H.   Shannon A.G.   in International Journal of Mathematical Education in Science and Technology

ISSN:1464-5211|33|5|763-769

Taylor & Francis Ltd‎(2002)‎

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