Hinojo Lucena, F. J., Aznar Díaz, I., Cáceres Reche, M. P. and Romero Rodríguez, J. M. (2019) “A Tour of Open Universities Through Literature: A Bibliometric Analysis”, The International Review of Research in Open and Distributed Learning, 20(4). doi: 10.19173/irrodl.v20i3.4079.