Fabrizio Grandoni Jochen Könemann Alessandro Panconesi Mauro Sozio A Primal-Dual Bicriteria Distributed Algorithm for Capacitated Vertex Cover. 825-840 2008 38 SIAM J. Comput. 3 http://dx.doi.org/10.1137/06065310X db/journals/siamcomp/siamcomp38.html#GrandoniKPS08