Haase, P., Hotho, A., Schmidt-Thieme, L. & Sure, Y. (2005). Collaborative and Usage-Driven Evolution of Personal Ontologies.. In A. Gómez-Pérez & J. Euzenat (eds.), The Semantic Web: Research and Applications (p./pp. 486--499), Berlin/Heidelberg: Springer. ISBN: 3-540-26124-9