@phdthesis{HasslerVolkmann2011,
  author    = {Haßler, Gerda and Volkmann, Gesina},
  title     = {Temporalidad y deixis m{\´u}ltiple en textos narrativos},
  isbn      = {978-3-631-62057-1},
  year      = {2011},
  language  = {es}
}
@article{HasslerVolkmann2008,
  author    = {Haßler, Gerda and Volkmann, Gesina},
  title     = {Prefacio},
  year      = {2008},
  language  = {es}
}