Gustavo Marfia Claudio E. Palazzi Giovanni Pau Mario Gerla Medy Sanadidi Marco Roccetti Balancing video on demand flows over links with heterogeneous delays. 22 2007 MobiMedia http://doi.acm.org/10.1145/1385289.1385316 conf/mobimedia/2007 db/conf/mobimedia/mobimedia2007.html#MarfiaPPGSR07