Lintz, G. 2017. Blatter, Joachim; Haverland, Markus (2014): Designing Case Studies: Explanatory Approaches in Small-N Research. Raumforschung und Raumordnung | Spatial Research and Planning. 75, 2 (Apr. 2017), 193–195. DOI:https://doi.org/10.1007/s13147-016-0462-z.