@article{Mackensen99qualitative,
  author = {Mackensen, K. and Wille, U.},
  interhash = {6ce66765071e8de50b538d5b4cb022be},
  intrahash = {1219942d4925f5b4fe5d728dd264daca},
  journal = {Quality and Quantity: International Journal of Methodology},
  number = 33,
  pages = {135--156},
  title = {Qualitative Text Analysis Supported by Conceptual Data Systems.},
  volume = 2,
  year = 1999
}