Torbeyns, J., Peters, G., De Smedt, B., Ghesquière, P. and Verschaffel, L. (2018) “Subtraction by Addition Strategy Use in Children of Varying Mathematical Achievement Level: A Choice/No-Choice Study”, Journal of Numerical Cognition, 4(1), pp. 215-234. doi: 10.5964/jnc.v4i1.77.