Amitanand S. Aiyer Lorenzo Alvisi Allen Clement Michael Dahlin Jean-Philippe Martin Carl Porth BAR fault tolerance for cooperative services. 45-58 2005 conf/sosp/2005 SOSP http://doi.acm.org/10.1145/1095810.1095816 db/conf/sosp/sosp2005.html#AiyerACDMP05