@book{ title = "Tristan", author = "Ulrich,Kerth, Thomas", year = "1978", publisher = "Univ.Microfilms", address = "Ann Arbor, Mich.", title = "A critical edition", language = "und", note = "New Haven, Conn., Diss., 1976, Kerth, Thomas A.", content = "Inhaltsverzeichnis", }