@MASTERSTHESIS{Braker2004diplom, author = {Marco Braker}, title = {Workflowpetrinetze - Hierarchisierung mittels Netze-in-Netzen}, school = {Universität Hamburg, Fachbereich Informatik}, year = {2004}, type = {Diplomarbeit}, address = {Vogt-Kölln-Str. 30, 22527 Hamburg, Germany}, month = {3} }