An Ontology-driven Portal for a Collaborative Learning Community. - José Ignacio Mayorga; Beatriz Barros; Carlos Celorrio; M. Felisa Verdejo (AIED, 2005)

An Educational Networking Infrastructure Supporting Ubiquitous Learning for School Students. - M. Felisa Verdejo; Carlos Celorrio; Emilio Lorenzo; Teresa Sastre-Toral (ICALT, 2006)

Improving Learning Object Description Mechanisms to Support an Integrated Framework for Ubiquitous Learning Scenarios. - M. Felisa Verdejo; Carlos Celorrio; Emilio Lorenzo (WMTE, 2006)

A Multi-Agent Based System for Activity Configuration and Personalization in a Pervasive Learning Framework. - M. Felisa Verdejo; Carlos Celorrio (PerCom Workshops, 2007)

Virtual Collaborative Learning Communities: from Metadata to Semantics. - José Ignacio Mayorga; Carlos Celorrio; Emilio Julio Lorenzo; Javier Vélez; Beatriz Barros; María Felisa Verdejo Maillo (Inteligencia Artif., 2007)

An Interoperable, Extensible and Configurable Service Architecture for an Integrated Educational Networking Infrastructure. - Carlos Celorrio; M. Felisa Verdejo (ICALT, 2008)