Rachid Guerraoui Michal Kapalka Petr Kouznetsov The Weakest Failure Detectors to Boost Obstruction-Freedom. 399-412 2006 conf/wdag/2006 DISC http://dx.doi.org/10.1007/11864219_28 db/conf/wdag/disc2006.html#GuerraouiKK06