@Article{DemaEkimdeWe09,
author = {Marc Demange and Tinaz Ekim and Dominique de Werra },
title = {A tutorial on the use of graph coloring for some problems in robotics},
journal = {European Journal of Operational Research},
volume = {1},
number = {1},
pages = {41-55},
doi = {10.1016/j.ejor.2007.09.018 },
year = {2009}
}