Yiwei Cao and Karsten Ehms and Sebastian Fiedler and Margit Hofer and Anna-Kaarina Kaiamo and Barbara Kieslinger and Ralf Klamma and Beate Krause and Milos Kravcik and Tommi Ryyppö and Marc Spaniol and Gerd Stumme and Fridolin Wild(2007) Deliverable 15.2, European Network of Excellence ``Prolearn - Professional E-Learning''
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