Jurek Czyzowicz Leszek Gasieniec Dariusz R. Kowalski Andrzej Pelc Consensus and Mutual Exclusion in a Multiple Access Channel. 512-526 2009 DISC http://dx.doi.org/10.1007/978-3-642-04355-0_51 conf/wdag/2009 db/conf/wdag/disc2009.html#CzyzowiczGKP09