1. Guidelines for Life-Cycle Assessment: A ‘Code of Practice’;Consoli,1993
2. Nordic Guidelines on Life-Cycle Assessment;Lindfors,1995
3. Environmental Life Cycle Assessment of Products;Heijungs,1992
4. Life Cycle Design Guidance Manual - Environmental Requirements and the Product Systems;Keoleian,1993
5. A Manager's Introduction to Product Design and the Environment;Cowell,1997