K. Meyer, M. Thieme, C. Zinke, und N. Drechsler. Smart Services and Service Science Proceedings of the 4th Internaional Symposium on Services Science, Leipzig (Germany), September 25, 2012, Volume 35 von Leipziger Beiträge zur Informatik, Seite 17-40. Leipzig, LIV/InfAI, (2012)
F. Schumacher, S. Klingner, R. Gey, und M. Becker. Services and New Societal Challenges: Innovation for Sustainable Growth and Welfare, Seite 1248--1255. (2014)