Meyer, Christopher, Hans-Eggert Reimers, and Laima Gerlitz. “The R-G Differential: A Policy Instrument for German Federal States to Explore Fiscal Policy Potentials?”. European Journal of Geography 16, no. 2 (October 24, 2025): 349–357. Accessed October 26, 2025. https://eurogeojournal.eu/index.php/egj/article/view/913.