Ortega Sánchez, I., Albert Gómez, M. J. and García Pérez, M. (2017) “Development of plurilingualism through the Electronic European Language Portfolio (eelp) at the Official Language School: a case study”, Enseñanza & Teaching: Interuniversity Journal of Didactic, 35(1), pp. 81–98. doi: 10.14201/et20173518198.