@misc{GrammigHujer1997,
  author    = {Joachim Grammig and Reinhard Hujer},
  title     = {Modelling consumer behaviour in a profile design using a three equation generalised Tobit model},
  booktitle = {Frankfurter volkswirtschaftliche Diskussionsbeitr{\"a}ge ; Arbeitspapier Nr. 76},
  url       = {http://much-magic.wiwi.uni-frankfurt.de/Professoren/hujer/research.htm},
  institution = {Wirtschaftswissenschaften},
  type      = {workingpaper},
  pages     = {26},
  year        = {1997},
}