Gauthier Picard Carole Bernon Marie Pierre Gleizes ETTO: Emergent Timetabling by Cooperative Self-organization. 31-45 2005 conf/atal/2005esoa Engineering Self-Organising Systems http://dx.doi.org/10.1007/11734697_3 db/conf/atal/esoa2005.html#PicardBG05