S. Braun, A. Schmidt, и C. Hentschel. 1st Workshop on Architecture, Design, and Implementation of the Semantic Desktop (SemDesk Design), 4th European Semantic Web Conference (ESWC 2007), Innsbruck, Austria, (2007)
D. Cutting, D. Karger, J. Pedersen, и J. Tukey. Proceedings of the 15th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, стр. 318-329. ACM Press, (1992)
M. Nurminen, и J. Itkonen. Concept Mapping - Connecting Educators. Proceedings of the 3rd International Conference on Concept Mapping. Volume III. Poster papers, стр. 202-205. IHMC, (2008)