André Ludwig Peter Braun Ryszard Kowalczyk Bogdan Franczyk A Framework for Automated Negotiation of Service Level Agreements in Services Grids. 89-101 2005 conf/bpm/2005w Business Process Management Workshops http://dx.doi.org/10.1007/11678564_9 db/conf/bpm/bpmw2005.html#LudwigBKF05