4Heijungs R. Environmental Life-cycle assessment of Products. Guide and Backgrounds, CML. Leiden,The Netherlsnds, Leiden University, 1992:p263
-277.
5Lindfors LG. Nordic Guidelines on Life-cycle assessment. Copenhagen, Danmark: Nordic Council of Minsters .1995:p17-23.
6Goran F. Life-cycle assessment as a decision-support tool-the case of reycling versus incineration of paper, Resources. Conservation and Recycling 24(1998)235.
7Vass AM. Environmental consequencea of waste paper usage and handling in Swedish . Resources.Coeservation and Recycling 14(1995)225.
8Goran F. Methodological aspects of Life-cycle assessment of integrated solid waste management systems. Resources. Conservatton and Recycling 26 (1999)173.
9Bystrom S. Paper recycling,environmental and economic impact. Resourees.Conservation and Recycling 21 (1997) 109.
10Christensen TH. Sanitary Landfitling .process,technology and environmental impact. Academic Press,New York, 1989. p155-166.
4Nigel D, Sue S, Jean-Paul J. Pulp Fact Environmental Implications of the Paper Cycle [J/OL]. http://www.equilibriumresearch.com/upload/ document/pulpfact.pdf.
6Finnveden G, Ekvall T. Life-Cycle Assessment as a Decision-Support Tool -- the Case of Recycling Versus Incineration of Paper [J]. Resources, Conservation and Recycling, 1998(24): 235-256.
7Arthur C V. Economics Favor Increased Use of Recycled Fiber Mi Most Furnishes [J]. Pulp & Paper and Pulp& Paper International magazines, 1991.
8Ekvall T. Key Methodological Issues for Life Cycle Inventory Analysis of Paper Recycling [J], Journal of Cleaner Production, 1997(7): 281-294.
9Stig B, Lars L. Paper Recycling: a Discussion of Methodological Approaches. [J]. Resources, Conservation and Recycling, 2000(28): 55-65.
