1. Solid Freeform Fabrication: A New Direction in Manufacturing:;Beaman,1997
2. Environmental aspects of laser-based and conventional tool and die manufacturing;Morrow;Journal of Cleaner Production.,2007
3. Yanchun L, Zhiming J, Leu MC, Caudill R. Environmental performance analysis of solid freedom fabrication processes. Electronics and the Environment, 1999 ISEE -1999 Proceedings of the 1999 IEEE International Symposium on1999. p. 1-6.
4. ISO 14040 Environmental managementd Life cycle assessmentd Principles and framework: International Organisation for Standardisation. 1998.
5. Sustainability indicators for discrete manufacturing processes applied to grinding technology;Linke;Journal of Manufacturing Systems.,2013