1. Arndt , C. 2004 Information measures: Information and its description in science and engineering . Heidelberg, Germany: Springer
2. Statistical analysis and the illusion of objectivity;Berger;American Scientist,1988
3. Survey of approaches to improve reliability in LCA;Björklund;The International Journal of Life Cycle Assessment,2002
4. Anthropogenic cycles of the elements: A critical review;Chen;Environmental Science & Technology,2012