Thomas R. Gulledge, Rainer A. Sommer, Mathias Kirchmer, Georg Simon. Analyzing Maintenance Collaboration in Multiple Overlapping SAP Instances. In Harinder Jagdev, Johan C. Wortmann, Henk Jan Pels, editors, Collaborative Systems for Production Management, IFIP TC5/WG5.7 Eighth International Conference on Advances in Production Management Systems, September 8-13, 2002, Eindhoven, The Netherlands. Volume 257 of IFIP Conference Proceedings, pages 587-601, Kluwer, 2002.