@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}
  }