Cueli, Marisol, Paloma González-Castro, Jennifer Krawec, José C. Núñez, and Julio A. González-Pienda. “Hipatia: A Hypermedia Learning Environment in Mathematics”. Anales de Psicología / Annals of Psychology 32, no. 1 (December 25, 2015): 98-105. Accessed September 15, 2019. https://revistas.um.es/analesps/article/view/analesps.32.1.185641.