Cueli, M., P. González-Castro, J. Krawec, J. C. Núñez, and J. A. González-Pienda. “Hipatia: A Hypermedia Learning Environment in Mathematics”. Anales De Psicología / Annals of Psychology, Vol. 32, no. 1, Dec. 2015, pp. 98-105, doi:10.6018/analesps.32.1.185641.