@misc{Hassler2004,
  author    = {Haßler, Gerda},
  title     = {Kniffka, H. (Hrsg.), Grammatik im Kulturvergleich: Indigenous Grammar Across Cultures; Frankfurt am Main, Lang, 2001},
  year      = {2004},
  language  = {de}
}
@misc{Hassler2004,
  author    = {Haßler, Gerda},
  title     = {Rosenfeld, S., A Revolution in Language: the Problem of Signs in Late Eighteenth-Century France; Stanford, Stanford University Press, 2001},
  year      = {2004},
  language  = {en}
}
@misc{Hassler2004,
  author    = {Haßler, Gerda},
  title     = {Meier, G.F., Fr{\"u}he Schriften zur {\"a}sthetischen Erziehung der Deutschen in 3 Teilen; Halle, Hallescher Verl., 1999},
  year      = {2004},
  language  = {de}
}