1. Kowalkowski, C. , Managing the Industrial Service Function, in Institutionen för ekonomisk och industriell utveckling, Industriell marknadsföring och industriell ekonomi, 2008, Linköpings University: Linköping.
2. Lindahl, M., Sakao, T., Sundin, E., and Shimomura, Y. Product/Service Systems Experiences – an International Survey of Swedish, Japanese, Italian and German Manufacturing Companies. in CIRP Industrial Product-Service Systems (IPS2) Conference. 2009. Cranfield, The United Kingdom: Cranfield University.
3. Tukker, A. and Tischner, U., New Business for Old Europe, 2006, Sheffield: Greenleaf Publishing.
4. Tukker, A., Product services for a resource-efficient and circular economy – a review. Journal of Cleaner Production,(0).
5. Ellen MacArthur Foundation, Towards the Circular Economy Vol. 1: an economic and business rationale for an accelerated transition, 2012.