Valencia, Daniel Cardona, Lemy Bran-Piedraita, Alejandro Ocampo Osorio, Lucia Palacios Moya, and Alejandro Valencia Arias. 2018. “Research Trends in Relation to the Orientation of the University Research Centers: Perspectives from the Bibliometric Analysis”. European Journal of Education 1 (2):77-87. https://doi.org/10.26417/ejed.v1i2.p77-87.