@book{Hegering.2008, address = {Bonn}, author = {Hegering, Heinz-Gerd}, institution = {Gesellschaft f\"ur Informatik}, interhash = {869b4224edc9f97300912219043e76c4}, intrahash = {b005d5ac195f5266fa379c310ba87bc8}, isbn = {9783885792277}, publisher = {Ges. f\"ur Informatik}, series = {Informatik 2008}, title = {GI-Edition Lecture Notes in Informatik}, url = {\url{http://www.gbv.de/dms/ilmenau/toc/577898957.PDF}}, volume = {Bd. 1}, year = 2008 }