1. ISO 14040. Environmental management—life cycle assessment—principles and framework. ISO, 1997E.
2. ISO 14041. Environmental management—life cycle assessment—goal and scope definition and inventory analysis. ISO, 1998E.
3. ISO 14042. Environmental management—life cycle assessment—life cycle impact assessment. ISO, 2000E.
4. ISO 14043. Environmental management—life cycle assessment—life cycle interpretation. ISO, 2000E.
5. Process synthesis and optimization tools foe environmental design;Alexander;Computers & Chemical Engineering,2000