Benny Chor Michael R. Fellows Mark A. Ragan Igor Razgon Frances A. Rosamond Sagi Snir Connected Coloring Completion for General Graphs: Algorithms and Complexity. 75-85 2007 conf/cocoon/2007 COCOON http://dx.doi.org/10.1007/978-3-540-73545-8_10 db/conf/cocoon/cocoon2007.html#ChorFRRRS07