@book{BotheDolzerHailbronneretal.2007,
  author    = {Bothe, Michael and Dolzer, Rudolf and Hailbronner, Kay and Klein, Eckart and Kunig, Philip and Schr{\"o}der, Meinhard and Graf Vitzthum, Wolfgang},
  title     = {V{\"o}lkerrecht},
  editor    = {Graf Vitzthum, Wolfgang},
  publisher = {de Gruyter},
  address   = {Munchen},
  isbn      = {978-3-89949-426-6},
  pages     = {757 S.},
  year      = {2007},
  language  = {de}
}
@book{FiedlerKleinSchnyder1998,
  author    = {Fiedler, Wilfried and Klein, Eckart and Schnyder, Anton K.},
  title     = {Gegenmaßnahmen : Referate und Thesen ; mit Diskussion ; with English summaries of the reports = Counter measures},
  series = {Berichte der Deutschen Gesellschaft f{\"u}r V{\"o}lkerrecht},
  volume    = {37},
  journal   = {Berichte der Deutschen Gesellschaft f{\"u}r V{\"o}lkerrecht},
  publisher = {M{\"u}ller},
  address   = {Heidelberg},
  pages     = {146 S.},
  year      = {1998},
  language  = {de}
}
@article{HailbronnerKlein1995,
  author    = {Hailbronner, Kay and Klein, Eckart},
  title     = {Artikel 10 - 12},
  year      = {1995},
  language  = {de}
}
@book{HailbronnerMagieraKleinetal.1996,
  author    = {Hailbronner, Kay and Magiera, S. and Klein, Eckart and M{\"u}ller-Graf, C.},
  title     = {Handkommentar zum Vertrag {\"u}ber die Europ{\"a}ische Union : EUV, EGV},
  publisher = {Heymanns},
  address   = {K{\"o}ln},
  isbn      = {3-452-22171-7},
  pages     = {Losebl.-Ausg. in 2 Ordnern},
  year      = {1996},
  language  = {de}
}
@incollection{Klein2017,
  author    = {Klein, Eckart},
  title     = {Membership and Observer Status},
  series = {The Council of Europe : its law and politics},
  booktitle = {The Council of Europe : its law and politics},
  editor    = {Schmahl, Stefanie and Breuer, Marten},
  publisher = {Oxford University Press},
  address   = {Oxford},
  isbn      = {978-0-19-967252-3},
  pages     = {41 -- 92},
  year      = {2017},
  language  = {en}
}
@incollection{Klein2017,
  author    = {Klein, Eckart},
  title     = {Seat and Symbols of the Council of Europe},
  series = {The Council of Europe : its law and politics},
  booktitle = {The Council of Europe : its law and politics},
  editor    = {Schmahl, Stefanie and Breuer, Marten},
  publisher = {Oxford University Press},
  address   = {Oxford},
  isbn      = {978-0-19-967252-3},
  pages     = {93 -- 107},
  year      = {2017},
  language  = {en}
}
@article{Klein2008,
  author    = {Klein, Eckart},
  title     = {Grundlagenvertragsurteil - Revisited},
  isbn      = {978-3-428-12745-0},
  year      = {2008},
  language  = {de}
}
@article{Klein2008,
  author    = {Klein, Eckart},
  title     = {Bemerkungen zur Rechtsprechung des Bundesverfassungsgerichts zum Auslandseinsatz deutscher Streitkr{\"a}fte},
  isbn      = {978-3-8329-3667-9},
  year      = {2008},
  language  = {de}
}
@article{Klein2008,
  author    = {Klein, Eckart},
  title     = {Zur Modernisierung des Finanzierungssystems der Europ{\"a}ischen Union : die Entschließung des Europ{\"a}ischen Parlaments vom 29. M{\"a}rz 2007 zur Zukunft der Eigenmittel der Europ{\"a}ischen Union},
  isbn      = {978-3-631-57034-0},
  year      = {2008},
  language  = {de}
}
@article{Klein2008,
  author    = {Klein, Eckart},
  title     = {(Un-) Vollendete Reformschritte in den Vereinten Nationen : die Beispiele Sicherheitsrat und Menschenrechtsrat},
  isbn      = {978-3-03-911489-4},
  year      = {2008},
  language  = {de}
}