C. Cattuto, D. Benz, A. Hotho, и G. Stumme. Proceedings of the 3rd Workshop on Ontology Learning and Population (OLP3), стр. 39--43. Patras, Greece, (июля 2008)ISBN 978-960-89282-6-8.
Y. Chen, Y. Kim, и S. Yoo. Ubiquitous Intelligence and Computing, том 4611 из Lecture Notes in Computer Science, Springer Berlin / Heidelberg, 10.1007/978-3-540-73549-6_69.(2007)
I. Constandache, S. Gaonkar, M. Sayler, R. Choudhury, и L. Cox. Mobile Computing, Applications, and Services, том 35 из Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, Springer Berlin Heidelberg, 10.1007/978-3-642-12607-9_14.(2010)
E. Demaine, A. López-Ortiz, и J. Munro. SODA '00: Proceedings of the eleventh annual ACM-SIAM symposium on Discrete algorithms, стр. 743--752. Philadelphia, PA, USA, Society for Industrial and Applied Mathematics, (2000)
P. Dornbusch, и M. Zündt. ITG-Fachtagung "Technologie und Anwendungen für die mobile Informationsgesellschaft", Dresden, ISBN 3-8007-2723-4, VDE Verlag, (2002)