Josef Widder Günther Gridling Bettina Weiss Jean-Paul Blanquart Synchronous Consensus with Mortal Byzantines. 102-112 2007 conf/dsn/2007 DSN http://doi.ieeecomputersociety.org/10.1109/DSN.2007.91 db/conf/dsn/dsn2007.html#WidderGWB07