Sukhendu Kanrar Sankhayan Choudhury Nabendu Chaki A Link-failure Resilient Token based Mutual Exclusion Algorithm for Directed Graph Topology. 65-72 2008 ISPDC http://dx.doi.org/10.1109/ISPDC.2008.17 conf/ispdc/2008 db/conf/ispdc/ispdc2008.html#KanrarCC08