%0 Book Section %A de Laat, Paul B. %B IFIP; Social Informatics: An Information Society for All? In Remembrance of Rob Kling Vol 223 %D 2006 %E Berleur, Jacques %E Nurminen, Markku I. %E Impagliazzo, John %I Springer %T Internet-Based Commons of Intellectual Resources: An Exploration of their Variety