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8 WEB LINKS
[w1] The International PSS Design Research Community; http://www.pssdesignresearch.org/
[w2] IPSE; International Product and Service Engineering; project website; http://www.ipse.se
[w3] Transregio 29; Engineering of Industrial Product- Service Systems; project website; http://www.tr29.de
Last request of all websites on March 12th; 2010.