@book{CantallopsOteroIglesiasetal.2006,
  author    = {Cantallops, Esperanza and Otero, Conchita and Iglesias, Ana and Re, Andr{\´e}s},
  title     = {Sin rodeos : curso intensivo de espanol [Hauptband]},
  publisher = {Egert},
  address   = {Wilhelmsfeld},
  isbn      = {3-936496-84-6},
  pages     = {281 S.},
  year      = {2006},
  language  = {es}
}
@book{CantallopsOtero1996,
  author    = {Cantallops, Esperanza and Otero, Conchita},
  title     = {Sin rodeos : curso intensivo de espa{\~n}ol ; Bd. 2 Clave de los ejercicios},
  publisher = {Egert},
  address   = {Wilhelmsfeld},
  isbn      = {3-926972-48-3},
  pages     = {40 S.},
  year      = {1996},
  language  = {de}
}
@book{CantallopsOtero1994,
  author    = {Cantallops, Esperanza and Otero, Conchita},
  title     = {Sin rodeos : curso intensivo de espa{\~n}ol [Hauptband]},
  publisher = {Egert},
  address   = {Wilhelmsfeld},
  isbn      = {3-926972-39-4},
  pages     = {XI, 195 S.},
  year      = {1994},
  language  = {es}
}
@book{CantallopsOtero2002,
  author    = {Cantallops, Esperanza and Otero, Conchita},
  title     = {Sin rodeos : curso intensivo de espa{\~n}ol ; Bd. 2 Clave de los ejercicios},
  publisher = {Egert},
  address   = {Wilhelmsfeld},
  isbn      = {3-926972-89-0},
  pages     = {48 S.},
  year      = {2002},
  language  = {de}
}
@book{CantallopsOtero2001,
  author    = {Cantallops, Esperanza and Otero, Conchita},
  title     = {Sin rodeos : curso intensivo de espa{\~n}ol [Hauptband]},
  publisher = {Egert},
  address   = {Wilhelmsfeld},
  isbn      = {3-926972-84-x},
  pages     = {XII, 250 S.},
  year      = {2001},
  language  = {es}
}
@article{Cantallops2000,
  author    = {Cantallops, Esperanza},
  title     = {Aprendizaje de Lenguas Europeas con Ordenador e Internet},
  year      = {2000},
  language  = {es}
}