@MASTERSTHESIS{Ostermann2003diplom,
  author  = {Björn Ostermann},
  title   = {Prinzipien und Realisierung von Uno/Redo-Mechanismen},
  school  = {Universität Hamburg, Fachbereich Informatik},
  year    = {2003},
  type    = {Diplomarbeit},
  address = {Vogt-Kölln-Str. 30, 22527 Hamburg, Germany},
  month   = {1}
}