Bennat, Tatjana, Tom Broekel, and Rolf Sternberg. 2019. “How to Measure the Usage of Regional Potentials of Renewable Energies. An Empirical Analysis of German Counties”. Raumforschung Und Raumordnung | Spatial Research and Planning 77 (6): 617-38. https://doi.org/10.2478/rara-2019-0043.