@article{Buschmann1994,
  author    = {Buschmann, Albrecht},
  title     = {La novela negra : cambio social reflejado en un g{\´e}nero popular},
  year      = {1994},
  language  = {en}
}
@misc{Hassler1994,
  author    = {Haßler, Gerda},
  title     = {Nerlich, B., Semantic theories in Europe 1830 - 1930; Amsterdam, Benjamins, 1992},
  year      = {1994},
  language  = {en}
}