Jun Chen 0020 Victor C. S. Lee Joseph Kee-Yin Ng Scheduling Real-Time Multi-item Requests in On-Demand Broadcast. 207-216 2008 RTCSA https://doi.org/10.1109/RTCSA.2008.20 https://doi.ieeecomputersociety.org/10.1109/RTCSA.2008.20 conf/rtcsa/2008 db/conf/rtcsa/rtcsa2008.html#ChenLN08