Maria De Marsico Susanna Fratarcangeli Stefano Levialdi Leonardo Lombardo CoOL-Room: Collaboration Oriented Learning Room. 189-192 2004 conf/vl/2004 VL/HCC http://doi.ieeecomputersociety.org/10.1109/VLHCC.2004.15 db/conf/vl/vlhcc2004.html#MarsicoFLL04