TY - CHAP TI - Revision support for modeling tasks, topics and skills AF - I-SEMANTICS ¿09, 5th International Conference on Semantic Systems PP - Graz PY - 2009-01-01 AU - Pammer, Viktoria AU - Kump, Barbara AU - Ghidini, Chiara AU - Rospocher, Marco AU - Serafini, Luciano AU - Lindstaedt, Stefanie ER -