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Axiomathes > 2015 > 25 > 3 > 313-333
Educational Studies in Mathematics > 2010 > 74 > 2 > 185-205
Linear Algebra and Its Applications > 2002 > 356 > 1-3 > 211-230
Axiomathes > 2015 > 25 > 3 > 313-333
Educational Studies in Mathematics > 2010 > 74 > 2 > 185-205
Linear Algebra and Its Applications > 2002 > 356 > 1-3 > 211-230