By Balke Wolf   Güntzer Ulrich   Siberski Wolf   in Informatik - Forschung und Entwicklung

ISSN:0178-3564|21|3-4|165-178

Springer Publishing Company ‎(2007)‎

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By Stuckenschmidt Heiner   Siberski Wolf   Nejdl Wolfgang   in The Learning Organization: An International Journal

ISSN:0969-6474|12|5|480-491

Emerald Group Publishing Ltd‎(2005)‎

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