Chicaiza Espinosa, Janneth Alexandra and Piedra Pullaguari, Nelson Oswaldo and LoĆ³ez Vargas, Jorge and Tovar Caro, Edmundo (2015). A user profile definition in context of recommendation of open educational resources. An approach based on linked open vocabularies. In: "2015 IEEE Frontiers in Education Conference (FIE)", 21-24 Oct 2015, Texas, Estados Unidos. ISBN 978-1-4799-8454-1. pp. 1-7. https://doi.org/10.1109/FIE.2015.7344314.