Brown Burton 1978
J. S. Brown and R. R. Burton, “Diagnostic models for procedural bugs in basic mathematical skills,” Cognitive Science, vol. 2, no. 2, pp. 155–192,
1978. https://doi.org/10.1207/s15516709cog0202_4
J. S. Brown and R. R. Burton, “Diagnostic models for procedural bugs in basic mathematical skills,” Cognitive Science, vol. 2, no. 2, pp. 155–192,
1978. https://doi.org/10.1207/s15516709cog0202_4