@BOOK{Mueller+2003mates, title = {Multiagent System Technologies: First German Conference, MATES 2003}, publisher = {Springer-Verlag}, year = {2003}, editor = {M.~Schillo and M.~Klusch and J.~P.~M{\"u}ller and R.~Unland}, volume = {2831}, series = {Lecture Notes in Artificial Intelligence}, rgroup = {winf} }