1. R. Steiner and R. Frischknecht, Ecoinvent report nr. 23 (2007).
2. T. Gutowski, J. Dahmus, and A. Thiriez, Proceedings 13th CIRP International Conference on Life Cycle Engineering, Leuven (2006), pp.623-628.
3. CO2PE! (Cooperative Effort on Process Emissions in Manufacturing) – Website and data exchange platform, http: /www. mech. kuleuven. be/co2pe.
4. N. Bay, A. Azushima, P. Groche, I. Ishibashi, M. Merklein, M. Morishita, T. Nakamura, S. Schmid and M. Yoshida, CIRP Annals – Manufacturing Technology (2010), pp.760-780.
5. G. Ingarao, R. Di Lorenzo and F. Micari, Journal of Cleaner Production (2011), pp.337-347.