Gladys Diaz Jean-Pierre Thomesse Zoubir Mammeri An Object-Oriented Modelling of Co-operative Multimedia Systems. 2166- 2000 conf/euromicro/2000 EUROMICRO http://csdl.computer.org/comp/proceedings/euromicro/2000/0780/02/07802166abs.htm db/conf/euromicro/euromicro2000.html#DiazTM00