Yuh-Shyan Chen Che-Yi Chen Yu-Chee Tseng Multi-Node Broadcasting in a Wormhole-Routed 2-D Torus Using an Aggregation-then-Distribution Strategy. 50-55 1999 ICPP Workshops http://computer.org/proceedings/icpp/0353/03530050abs.htm db/conf/icppw/icppw1999.html#ChenCT99