Potter, Jonathan, Haifeng Qian, Michael Fritsch, David J. Storey and Georgios Fotopoulos: Leapfrogging and Plunging in Regional Entrepreneurship Performance in thw United States, with European Comparisons. Paris 2023: OECD publishing, OECD SME and Entrepreneurship Papers No. 44. https://dx.doi.org/10.1787/bc031b11-en