Wayne Goddard Stephen T. Hedetniemi David Pokrass Jacobs Pradip K. Srimani Zhenyu Xu Self-Stabilizing Graph Protocols. 189-199 2008 18 Parallel Processing Letters 1 http://dx.doi.org/10.1142/S0129626408003314 db/journals/ppl/ppl18.html#GoddardHJSX08