Jérémie Chalopin Antoni Mazurkiewicz Yves Métivier Labelled (Hyper)Graphs, Negotiations and the Naming Problem. 54-68 2008 ICGT http://dx.doi.org/10.1007/978-3-540-87405-8_5 conf/gg/2008 db/conf/gg/icgt2008.html#ChalopinMM08