Chien-Fu Cheng Shu-Ching Wang Tyne Liang Server-Initiated Byzantine Agreement over Two-Level Combined Wired/Wireless Networks. 162-165 2006 conf/pdcat/2006 PDCAT http://doi.ieeecomputersociety.org/10.1109/PDCAT.2006.98 db/conf/pdcat/pdcat2006.html#ChengWL06