Augusto Neto Eduardo Cerqueira Marília Curado Edmundo Monteiro Paulo Mendes An integrated approach to control the quality level of multi-user sessions. 3 2008 SimuTools http://doi.acm.org/10.1145/1416222.1416226 conf/simutools/2008 db/conf/simutools/simutools2008.html#NetoCCMM08