Fritsch, Michael, Maria Greve and Michael Wyrwich: The Entrepreneurial League Table of German Regions 1895 and 2019. In: Jay Mitra and George Saridakis (eds): Entrepreneurship and Small Business: Collection of Research, Policy and Personal Insights in Honour of Contributions of David Storey. Cham: Springer Nature. https://oweb.b67.uni-jena.de/Papers/jerp2023/wp_2024_001.pdf