Conference paper (2006) - M. Kajko-Mattsson (author) , G. Canfora (author) , D. Chiorean (author) , Arie Van van Deursen (author) , T. Ihme (author) , M.M. Lehman (author) , R. Reiger (author) , T. Engel (author) , J. Wernke (author)