@book{EckertHattenhauer1994,
  author    = {Eckert, J{\"o}rn and Hattenhauer, Hans},
  title     = {78 Klausuren aus dem BGB : mit L{\"o}sungsskizzen},
  series = {Juristische Examensklausuren},
  volume    = {1},
  journal   = {Juristische Examensklausuren},
  publisher = {Luchterhand},
  address   = {Neuwied},
  year      = {1994},
  language  = {de}
}
@book{EckertHattenhauer1996,
  author    = {Eckert, J{\"o}rn and Hattenhauer, Christian},
  title     = {75 Klausuren aus dem BGB : mit L{\"o}sungsskizzen},
  series = {Juristische Examensklausuren},
  volume    = {1},
  journal   = {Juristische Examensklausuren},
  publisher = {Luchterhand},
  address   = {Neuwied},
  year      = {1996},
  language  = {de}
}
@book{Eckert2003,
  author    = {Eckert, J{\"o}rn},
  title     = {Schuldrecht : allgemeiner Teil},
  publisher = {Nomos-Verl.-Ges},
  address   = {Baden-Baden},
  isbn      = {3-7890-7999-5},
  pages     = {484 S.},
  year      = {2003},
  language  = {de}
}