By Tatsis Konstantinos   Koleza Eugenia   in Social Psychology of Education

ISSN:1381-2890|9|4|443-460

Springer Publishing Company ‎(2006)‎

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By Koleza Eugenia   Pappas John   in International Journal of Mathematical Education in Science and Technology

ISSN:1464-5211|39|6|701-723

Taylor & Francis Ltd‎(2008)‎

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