1. Our Common Future;Brundtland,1987
2. A technical framework for life-cycle assessment;Fava,1991
3. Guidelines for life-cycle assessments: A code of practice;Boustead,1993
4. Vigon BW. Life-Cycle Assessment: Inventory Guidelines and Principles. EPA/600/R-92/245, U.S. EPA, Cincinnati, 1993
5. Jiménez-Beltrán D. Methodological Framework and Applications of LCA. European Environment Agency Report, Brussels, 1997