Hits 21-23 within 23 documents
Hits 21-23 within 23 documents
Author(s): Bell, Mark W.; Castronova, Edward; Wagner, Gert G..- 2009. 47p.
Author(s): Schmidt, Jan; Dreyer, Stephan; Lampert, Claudia.- 2008. 96p.
Author(s): Lüttinger, Paul; Köhne-Finster, Sabine; Urban, Jeanine.- 2007. 37p.