@BOOK{zpo,
author     = {Adolf Baumbach and Wolfgang Lauterbach
              and Jan Albers and Peter Hartmann},
title      = {Zivilproze\ss ordnung mit
              Gerichtsverfassungsgesetz und anderen
              Nebengesetzen},
shorttitle = {ZPO},
language   = {ngerman},
edition    = {59. neubearb.},
year       = 2002,
address    = {M\"unchen}
}
@BOOK{aschur,
author     = {Hans Brox and Wolf-Dietrich Walker},
title      = {Allgemeines Schuldrecht},
language   = {ngerman},
edition    = {29.},
year       = 2003,
address    = {M\"unchen}
}
 @BOOK{bschur,
  author     = {Hans Brox and Wolf-Dietrich Walker},
  title      = {Besonderes Schuldrecht},
  shorttitle = {BSchuR},
  language   = {ngerman},
  edition    = {27.},
  year       = 2002,
  address    = {M\"unchen}
 }
 @BOOK{bgb,
  author     = {Otto Palandt},
  shortauthor= {Otto Palandt},
  title      = {B\"urgerliches Gesetzbuch},
  shorttitle = {BGB},
  language   = {ngerman},
  edition    = {62.},
  year       = 2003,
  publisher  = {Beck Juristischer Verlag},
  address    = {M\"unchen}
 }