1. Baumert, T. (2006) Los determinantes de la innovación. Un estudio aplicado sobre las regiones de la Unión Europea. Tesis Doctoral, Universidad Complutense de Madrid
2. Baumert, T. (2021). Patterns of knowledge creation in European regions: An analysis by the phases of the EU-enlargements. In N. Tsounis & A. Vlachvei (Eds.), Advances in longitudinal data methods in applied economic research. Springer.
3. Baumert, T., & Gutiérrez, C. (2020). Are we spending our scarce R&D resources adequately? Analysing the efficiency of EU’s regional innovation systems. In N. Tsounis & A. Vlachvei (Eds.), Advances in cross-section data methods in applied economic research. Springer.
4. Bellmann, L., Crimmann, A., Evers, K., & Hujer, R. (2013). Regional determinants of establishments innovations activities: A multi-level approach. Institute for the Study of Labor.
5. Beujelsdijk, S. (2007). The regional environment and a firm’s innovative performance: A plea for a multilevel interactionist approach. Economic Geography, 83(2), 181–199.