1. Abowd, G.D., M.R. Ebling und H.-W. Gellersen (2002): Context-Aware Pervasive Computing, IEEE Wireless Communications, 9(5), 8–9.
2. Bharadwaj, S., T.W. Gruen und D.S. Corsten (2002): Retail Out of Stocks — A Worldwide Examination of Extent, Causes, and Consumer Responses. Grocery Manufacturers of America, Food Marketing Institute and CIES — The Food Business Forum.
3. Bridgestone/ Firestone (2000): Bridgestone/Firestone Announces Voluntary Recall of 3.85 million RADIAL ATX and RADIAL ATX II Tires, and 2.7 million Wilderness AT Tires, Bridgestone/Firestone Press Release, August 9, 2000,
http://www.bridgestone-firestone.com/news/mediacenter/recall_archives/news/mediacenter/news/000809a.html
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4. Europäische Union (2002): Richtlinie 2002/96/EG des Europäischen Parlaments und des Rates vom 27. Januar 2003 über Elektro-und Elektronik-Altgeräte.
5. Europäische Union (2002): Richtlinie 2000/53/EG des Europäischen Parlamentes und des Rates vom 18. September 2000 über Altfahrzeuge.