1. Bisgaard, T., Henriksen, K., and Bjerre, M., Green Business Model Innovation - Conceptualisation, Next Practice and Policy: Oslo, Norway, 2012.
2. European Commission, A resource-efficient Europe – Flagship initiative under the Europe 2020 Strategy: Brussels, 2011.
3. Tukker, A. and Tischner, U., New Business for Old Europe, Sheffield: Greenleaf Publishing, 2006.
4. Mont, O., Product-service systems: Panacea or myth?, in International Institute for Industrial Environmental Economics, Lund University: Lund, 2004.
5. Lingegård, S., Sakao, T., and Lindahl, M., Integrated Product Service Engineering - Factors influencing environmental performance, in Systems Engineering, B. Cogan, Editor, InTech: Rijeka, Croatia. 2012; p. 147-164.