Thierry Villemur Véronique Baudin Stéphane Owezarski Michel Diaz An Integrated Platform for Cooperative Teleteaching. 59-70 1998 conf/idms/1998 IDMS http://link.springer.de/link/service/series/0558/bibs/1483/14830059.htm db/conf/idms/idms98.html#VillemurBOD98