By Kirillova Evgenia   Spindler Karlheinz   in International Journal of Mathematical Education in Science and Technology

ISSN:1464-5211|39|5|587-599

Taylor & Francis Ltd‎(2008)‎

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By Selder Erich   Spindler Karlheinz   in Mathematics

ISSN:2227-7390|3|1|2-15

MDPI‎(2015)‎

Access to resources Favorite 16.692375