@MASTERSTHESIS{Claasen2004diplom,
  author  = {Bernd Claasen},
  title   = {Vertrauen in Peer-to-Peer-Netzwerken},
  school  = {Universität Hamburg, Fachbereich Informatik},
  year    = {2004},
  type    = {Diplomarbeit},
  address = {Vogt-Kölln-Str. 30, 22527 Hamburg, Germany},
  month   = {5}
}