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E. Ong, O. Grebner, и U. Riss. 4th Conference on Professional Knowledge Management - Experiences and Visions -, March 28. - 30. 2007, Potsdam, Germany, GITO Verlag Berlin, (марта 2007)
U. Riss, U. Cress, J. Kimmerle, и S. Martin. Proceedings of KMAC2006, The Third Knowledge Management Aston Conference, Operational Research Society, Birmingham, (2006)