@misc{GuizzardiWagnerAlmeidaetal., author = {Guizzardi, Giancarlo and Wagner, Gerd and Almeida, Jo{\~a}o Paulo Andrade and Guizzardi, Renata}, title = {Towards Ontological Foundation for Conceptual Modeling: The Unified Foundationa lOntology (UFO) Story}, series = {Applied Ontology}, volume = {10}, journal = {Applied Ontology}, number = {3-4}, issn = {1570-5838}, doi = {10.3233/AO-150157}, pages = {259 -- 271}, language = {en} } @misc{GuizzardiWagnerAroyo, author = {Guizzardi, Renata and Wagner, Gerd and Aroyo, Lora}, title = {Knowledge management in learning communities}, series = {The ICFAI Journal of Knowledge Management}, volume = {3}, journal = {The ICFAI Journal of Knowledge Management}, number = {3}, pages = {30 -- 46}, language = {en} }