@article{371371,
      recid = {371371},
      author = {Helbig, Gerhard. and Popp, Heidrun.},
      title = {Deutsch als fremdsprache an den quellen eines faches :  festschrift für gerhard helbig zum 65. geburtstag., Volume  2 / [electronic resource] :},
      publisher = {Iudicisum Verlag,},
      address = {München :},
      pages = {xii, p. 778-1720 :},
      year = {1995},
      url = {http://library.usi.edu/record/371371},
}