Christoph Anthes Vassil N. Alexandrov Dieter Kranzlmüller Jens Volkert Gerhard Widmer Collaborative and Cooperative Environments. 379-380 2008 ICCS (3) http://dx.doi.org/10.1007/978-3-540-69389-5_43 conf/iccS/2008-3 db/conf/iccS/iccS2008-3.html#AnthesAKVW08