C. Batanero, M. M. Gea Serrano, P. Arteaga Cezón, J. M. Contreras García, and M. C. Díaz Batanero, “Content knowledge of correlation and regression in prospective teachers”, RELIME, vol. 21, no. 3, Oct. 2018, doi: 10.12802/relime.18.2134.