Li Zhu Nirwan Ansari Zafer Sahinoglu Anthony Vetro Huifang Sun Scalable Layered Multicast with Explicit Congestion Notification. 331-335 2003 conf/itcc/2003 ITCC http://doi.ieeecomputersociety.org/10.1109/ITCC.2003.1197550 db/conf/itcc/itcc2003.html#ZhuASVS03