Romero Martínez, Sonia Janeth, y Xavier Giovanni Ordonez Camacho. 2013. «Validation of the Cognitive Structure of an Arithmetic Test With the Least Squares Distance Model (LSDM)». Universitas Psychologica 13 (1):333-46. https://revistas.javeriana.edu.co/index.php/revPsycho/article/view/3671.