Till Janner Christoph Schroth Beat Schmid Modelling Service Systems for Collaborative Innovation in the Enterprise Software Industry - The St. Gallen Media Reference Model Applied. 145-152 2008 IEEE SCC (2) http://doi.ieeecomputersociety.org/10.1109/SCC.2008.34 conf/IEEEscc/2008 db/conf/IEEEscc/scc2008.html#JannerSS08