@book{VossenWitt2006, author = {Gottfried Vossen and Kurt-Ulrich Witt}, title = {Grundkurs theoretische Informatik}, edition = {4., verbesserte und erweiterte Auflage}, publisher = {Vieweg}, address = {Wiesbaden}, isbn = {3-8348-0153-4}, year = {2006}, language = {de} }