Holger Graf

• 04/2013 - 02/2014
  Temporary Professor of Economics at the TU Bergakademie Freiberg
• since 2012
  Faculty member of the DFG graduate college "The Economics of Innovative Change"
• since 2011
  Privatdozent at the Friedrich Schiller University Jena
• 2011
  Habilitation (PD Dr. rer. pol. habil.) at the Friedrich Schiller University Jena
  Title of the thesis: "Innovation, Interaction and Networks"
• June 2005
  Dissertation on "Interaction in Local Systems of Innovation: The Case of Jena" (degree: Dr. rer. pol.)
• since 2000
  Assistant at the Chair of Professor Dr. Uwe Cantner, Department of Economics, Friedrich-Schiller-University Jena
• 1997-2000
  Student of Economics at the University of Augsburg with special interests in economics of Innovation and environmental economics
• 1995-1997
  Student of Economics at the University of Regensburg

• Graf, Holger and Hoda Mohamed (2024), Robotization and employment dynamics in German manufacturing value chains, Structural Change and Economic Dynamics, 68, 133-147, doi: 10.1016/j.strueco.2023.10.014External link
• Graf, Holger and Martin Kalthaus (2023), Global Knowledge Embeddedness, in: Dopfer, K., Nelson, R. R., Potts, J., Pyka, A. (eds) Routledge Handbook of Evolutionary Economics, Ch. 26, Routledge, London. doi: 10.4324/9780429398971-29External link 
• Basilico, Stefano and Holger Graf (2023), Bridging technologies in the regional knowledge space: measurement and evolution, Journal of Evolutionary Economics, doi: 10.1007/s00191-023-00832-8External link
• Grashof, Nils and Holger Graf (2023), Universities that matter for regional knowledge base renewal - the role of multilevel embeddednessExternal link, Jena Economic Research Papers, 2023-009. 
• Graf, Holger and Hoda Mohamed (2023), Beyond Trading: Knowledge Spillovers and learning-by-exporting in Global Value ChainsExternal link, Jena Economic Research Papers, 2023-008.
• Basilico, Stefano, Uwe Cantner and Holger Graf (2023), Policy influence in the knowledge space: a regional application, Journal of Technology Transfer, 48(2), 591-622, doi: 10.1007/s10961-022-09925-1External link.
• Graf, Holger and Matthias Menter (2022), Public research and the quality of inventions: the role and impact of entrepreneurial universities and regional network embeddedness, Small Business Economics, 58(2), 1187-1204, doi: 10.1007/s11187-021-00465-wExternal link.
• Graf, Holger, Tom Broekel (2020), A shot in the dark? Policy influence on cluster networks, Research Policy, 49(3), doi: 10.1016/j.respol.2019.103920External link.
• Cantner, Uwe, Holger Graf and Michael Rothgang (2019), Geographical clustering and the evaluation of cluster policies: introduction, Journal of Technology Transfer, 44(6), 1665-1672, doi: 10.1007/s10961-018-9666-4External link.
• Hinzmann, Susanne, Uwe Cantner and Holger Graf (2019), The role of geographical proximity for project performance: evidence from the German Leading-Edge Cluster Competition, Journal of Technology Transfer, 44(6), 1744-1783, doi: 10.1007/s10961-017-9600-1External link.
• Töpfer, Stefan, Uwe Cantner and Holger Graf (2019), Structural dynamics of innovation networks in German Leading-Edge Clusters, Journal of Technology Transfer, 44(6), 1816-1839, doi: 10.1007/s10961-017-9642-4External link.
• Wolf, Tina, Uwe Cantner, Holger Graf and Michael Rothgang (2019), Cluster ambidexterity towards exploration and exploitation: strategies and cluster management, Journal of Technology Transfer, 44(6), 1840-1866, doi: 10.1007/s10961-017-9617-5External link.
• Graf Holger (2019) Powell et al. (1996): Interorganizational Collaboration and the Locus of Innovation. In: Holzer B., Stegbauer C. (eds) Schlüsselwerke der Netzwerkforschung. Springer VS, Wiesbaden, doi: 10.1007/978-3-658-21742-6_109External link
• Brökel, Tom, Holger Graf (2019) Innovationspolitik und Netzwerke. In: Stember J., Fink A., Pongratz P., Vogelgesang M. (eds) Handbuch Innovative Wirtschaftsförderung. Springer Gabler, Wiesbaden, doi: 10.1007/978-3-658-21597-2_28-1External link
• Graf, Holger and Martin Kalthaus (2018), International Research Networks: Determinants of Country Embeddedness, Research Policy, 47(7), 1198-1214, doi: 10.1016/j.respol.2018.04.001External link
• Cantner, Uwe, Holger Graf, Ekaterina Prytkova, Simone Vannuccini (2018). The Compositional Nature of Productivity and Innovation SlowdownExternal link, Jena Economic Research Papers, 2018-006.

Journal Articles

• Graf, Holger and Hoda Mohamed (2024), Robotization and employment dynamics in German manufacturing value chains, Structural Change and Economic Dynamics, 68, 133-147, doi: 10.1016/j.strueco.2023.10.014External link
• Basilico, Stefano and Holger Graf (2023), Bridging technologies in the regional knowledge space: measurement and evolution, Journal of Evolutionary Economics, doi: 10.1007/s00191-023-00832-8External link
• Basilico, Stefano, Uwe Cantner and Holger Graf (2023), Policy influence in the knowledge space: a regional application, Journal of Technology Transfer, 48(2), 591-622, doi: 10.1007/s10961-022-09925-1External link
• Graf, Holger and Matthias Menter (2022), Public research and the quality of inventions: the role and impact of entrepreneurial universities and regional network embeddedness, Small Business Economics, 58(2), 1187-1204, doi: 10.1007/s11187-021-00465-wExternal link.
• Graf, Holger and Tom Broekel (2020). A shot in the dark? Policy influence on cluster networks, Research Policy, 49(3), doi: 10.1016/j.respol.2019.103920External link.
• Cantner, Uwe, Holger Graf and Michael Rothgang (2019), Geographical clustering and the evaluation of cluster policies: introduction, Journal of Technology Transfer, 44(6), 1665-1672, doi: 10.1007/s10961-018-9666-4External link, SharedItExternal link
• Hinzmann, Susanne, Uwe Cantner and Holger Graf (2019), The role of geographical proximity for project performance: evidence from the German Leading-Edge Cluster Competition, Journal of Technology Transfer, 44(6), 1744-1783, doi: 10.1007/s10961-017-9600-1External link, SharedItExternal link.
• Töpfer, Stefan, Uwe Cantner and Holger Graf (2019), Structural dynamics of innovation networks in German Leading-Edge Clusters, Journal of Technology Transfer, 44(6), 1816-1839, doi: 10.1007/s10961-017-9642-4External link,  SharedItExternal link
• Wolf, Tina, Uwe Cantner, Holger Graf and Michael Rothgang (2019), Cluster ambidexterity towards exploration and exploitation: strategies and cluster management, Journal of Technology Transfer, 44(6), 1840-1866, doi: 10.1007/s10961-017-9617-5External link, SharedItExternal link
• Graf, Holger and Martin Kalthaus (2018), International Research Networks: Determinants of Country Embeddedness, Research Policy, 47(7), 1198-1214, doi: 10.1016/j.respol.2018.04.001External link
• Rothgang, Michael, Uwe Cantner, Jochen Dehio, Dirk Engel, Michael Fertig, Holger Graf, Susanne Hinzmann, Enikö Linshalm, Michael Ploder, Anne-Marie Scholz and Stefan Töpfer (2017), Cluster policy: insights from the German leading edge cluster competition, Journal of Open Innovation: Technology, Market, and Complexity, 3:18, doi: 10.1186/s40852-017-0064-1External link
• Cantner, Uwe, Holger Graf, Johannes Herrmann and Martin Kalthaus (2016), Inventor networks in renewable energies: The influence of the policy mix in GermanyExternal link, Research Policy, 45(6), 1165-1184.
• Brachert, Matthias, Uwe Cantner, Holger Graf, Jutta Günther and Michael Schwartz (2013), Introduction: Which regions benefit from emerging industries?External link, European Planning Studies, 21(11), 1703-1707.
• Brenner, Thomas, Uwe Cantner and Holger Graf (2013), Introduction: Structure and Dynamics of Innovation NetworksExternal link, Regional Studies, 47(5), 647-650.
• Graf, Holger (2012), Inventor networks in emerging key technologies: information technology vs. semiconductorsExternal link, Journal of Evolutionary Economics, 22(3), 459-480.
• Broekel, Tom and Holger Graf (2012), Public research intensity and the structure of German R&D networks: a comparison of 10 technologiesExternal link, Economics of Innovation and New Technology, 21(4), 345-372.
• Fritsch, Michael and Holger Graf (2011), How sub-national conditions affect regional innovation systems: The case of the two GermanysExternal link, Papers in Regional Science, 90(2), 331-353.
• Brenner, Thomas, Uwe Cantner and Holger Graf (2011), Innovation Networks: Measurement, Performance and Regional DimensionsExternal link, Industry and Innovation, 18(1), 1-5.
• Graf, Holger and Jens J. Krüger (2011), The Performance of Gatekeepers in Innovator NetworksExternal link, Industry and Innovation, 18(1), 69-88.
• Graf, Holger (2011), Gatekeepers in regional networks of innovatorsExternal link, Cambridge Journal of Economics, 35(1), 173-198.
• Cantner, Uwe and Holger Graf (2011), Innovation Networks: formation, performance and dynamics, in: C. Antonelli (Ed.), Handbook on the Economic Complexity of Technological Change, Ch. 15, Edward Elgar, Cheltenham UK.
• Graf, Holger and Tobias Henning (2009), Public Research in Regional Networks of Innovators: A Comparative Study of Four East-German RegionsExternal link, Regional Studies, 43(10), 1349-1368.
• Graf, Holger (2008), Foreign Subsidiaries in the East German Innovation System Evidence from manufacturing industries: Comment on J. Günther, J. Stephan and B. Jindra, Applied Economics Quarterly Supplement, Issue 59, 167-172.
• Cantner, Uwe and Holger Graf (2006), The Network of Innovators in Jena: An Application of Social Network AnalysisExternal link, Research Policy, 35(4), 463-480.
• Cantner, Uwe and Holger Graf (2004), Cooperation and specialization in German technology regionsExternal link, Journal of Evolutionary Economics, 14(5), 543-562.

Monographs

• Networks in the Innovation Process: Local and Regional InteractionsExternal link, Edward Elgar, Cheltenham, UK, 2006.
• Reviews:
  • Fromhold-Eisebith, M. (2008), Networks in the Innovation Process: Local and Regional Interactions By Holger GrafExternal link, Growth and Change, 39(1), 179-181.
  • Trippl, M. (2009), Networks in the Innovation Process: Local and Regional Interactions, by Holger GrafExternal link, Journal of Regional Science, 49(2), 402-404.

Articles in Collections

• Graf, Holger and Martin Kalthaus (2023), Global Knowledge Embeddedness, in: Dopfer, K., Nelson, R. R., Potts, J., Pyka, A. (eds) Routledge Handbook of Evolutionary Economics, Ch. 26, Routledge, London. doi: 10.4324/9780429398971-29External link 
• Graf, Holger (2019) Powell et al. (1996): Interorganizational Collaboration and the Locus of Innovation. In: Holzer B., Stegbauer C. (eds) Schlüsselwerke der Netzwerkforschung. Springer VS, Wiesbaden, doi: 10.1007/978-3-658-21742-6_109External link
• Brökel, Tom and Holger Graf (2019) Innovationspolitik und Netzwerke. In: Stember J., Fink A., Pongratz P., Vogelgesang M. (eds) Handbuch Innovative Wirtschaftsförderung. Springer Gabler, Wiesbaden, doi: 10.1007/978-3-658-21597-2_28-1External link
• Cantner, Uwe, Graf, Holger and Hinzmann, Susanne (2014), Policy induced innovation networks: the case of the German Leading-Edge Cluster competition, in: T. Scherngell (Ed.), The geography of networks and R&D collaborations, Ch. 19, Springer, Heidelberg.
• Cantner, Uwe and Holger Graf (2011), Innovation Networks: formation, performance and dynamics, in: C. Antonelli (Ed.), Handbook on the Economic Complexity of Technological Change, Ch. 15, Edward Elgar, Cheltenham UK.
• Cantner, Uwe and Holger Graf (2010), Growth, Development and Structural Change of Innovator Networks The Case of Jena, in: R. Boschma and R. Martin (Eds.), Handbook of Evolutionary Economic Geography, Ch. 17, Edward Elgar, Cheltenham UK.
• Graf, Holger and Tobias Henning (2010), Public Research in Regional Networks of Innovators: A Comparative Study of Four East-German Regions, in: A. Freytag, R. Thurik, Entrepreneurship and Culture,pp. 97-128, Springer, Heidelberg.
• Cantner, Uwe, Holger Graf and Andreas Meder (2009), Urbane Innovationssysteme: Das Innovationsnetzwerk in Jena, in: B. Blättel-Mink, A. Ebner, Innovationssysteme Technologie, Institutionen und die Dynamik der Wettbewerbsfähigkeit, VS Verlag, Wiesbaden.
• Graf, Holger and Randolf Margull (2008), A Model of an Innovation System with a Position Regulation of Science and Technology Parks within Innovation Networks, in: E. G. Carayannis and P. Formica (Eds.), Knowledge Matters: Technology, Innovation and Entrepreneurship in Innovation Networks and Knowledge Clusters, Palgrave Macmillan, 129-141.
• Cantner, Uwe and Holger Graf (2008), Evolving innovation networks some empirical results, in: R. Meckl, M. Rongping, M. Fanchen (Hrsg.), Technology and Innovation Management: Theories and practices from Germany and China, pp. 176-189, Oldenbourg, München.
• Cantner, Uwe and Holger Graf (2003), Innovationssysteme und kollektive Innovationsprozesse: Einige theoretische Grundlagen, in: U. Cantner, R. Helm, R. Meckl (Hrsg.), Strukturen und Strategien in einem Innovationssystem: Das Beispiel Jena, pp. 21-44, Verlag Wissenschaft & Praxis, Sternenfels.
• Cantner, Uwe and Holger Graf (2003), Technologische und ökonomische Leistungsfähigkeit des Innovationssystems Jena: Ein Vergleich mit Ulm, Dresden und Heidelberg, in: U. Cantner, R. Helm, R. Meckl (Hrsg.), Strukturen und Strategien in einem Innovationssystem: Das Beispiel Jena, pp. 45-74, Verlag Wissenschaft & Praxis, Sternenfels.
• Fornahl, Dirk and Holger Graf (2003), Standortfaktoren und Gründungsaktivitäten in Jena, in: U. Cantner, R. Helm, R. Meckl (Hrsg.), Strukturen und Strategien in einem Innovationssystem: Das Beispiel Jena, pp. 97-123, Verlag Wissenschaft & Praxis, Sternenfels.

Working Papers and Reports

• Grashof, Nils and Holger Graf (2023), Universities that matter for regional knowledge base renewal - the role of multilevel embeddednessExternal link, Jena Economic Research Papers, 2023-009.
• Graf, Holger and Hoda Mohamed (2023), Beyond Trading: Knowledge Spillovers and learning-by-exporting in Global Value ChainsExternal link, Jena Economics Research Papers, 2023-008.
• Graf, Holger and Martin Kalthaus (2022), Global Knowledge EmbeddednessExternal link, Jena Economic Research Papers, 2022-004.
• Basilico, Stefano, Uwe Cantner and Holger Graf (2021), Policy Influence in the Knowledge Space: a Regional ApplicationExternal link, Jena Economic Research Papers, 2021-011.
• Basilico, Stefano and Holger Graf (2020), Bridging Technologies in the Regional Knowledge Space: Measurement and EvolutionExternal link, Jena Economic Research Papers, 2020-012.
• Graf, Holger and Matthias Menter (2020), Public research and the quality of inventions: the role and impact of entrepreneurial universities and regional network embeddednessExternal link, Jena Economic Research Papers, 2020-011.
• Graf, Holger and Tom Broekel (2019). A shot in the dark? Policy influence on cluster networksExternal link, Jena Economic Research Papers, 2019-007.
• Cantner, Uwe, Holger Graf, Ekaterina Prytkova, Simone Vannuccini (2018). The Compositional Nature of Productivity and Innovation SlowdownExternal link, Jena Economic Research Papers, 2018-006.
• Graf, Holger (2017), Regional Innovator Networks A Review and an Application with RExternal link, Jena Economic Research Papers, 2017-016. data and codeExternal link
• Graf, Holger and Martin Kalthaus (2016), International Research Networks: Determinants of Country EmbeddednessExternal link, Jena Economic Research Papers, 2016-016.
• Rogge, K. S.; Breitschopf, B.; Mattes, K.; Cantner, U.; Graf, H.; Herrmann, J.; Kalthaus, M.; Lutz, C.; Wiebe, K. S. (2015), Grüner Wandel: Erneuerbare Energien, Policy Mix und Innovation Ergebnisse des GRETCHEN-Projektes zum Einfluss des Policy Mixes auf technologischen und strukturellen Wandel bei erneuerbaren Stromerzeugungstechnologien in Deutschland. DEExternal link / ENExternal link
• Cantner, Uwe, Holger Graf and Stefan Töpfer (2015), Structural dynamics of innovation networks in German Leading-Edge ClustersExternal link, Jena Economic Research Papers, 2015-026.
• Cantner, Uwe, Holger Graf  and Susanne Hinzmann (2015), The role of geographical proximity for project performance Evidence from the German Leading -Edge Cluster CompetitionExternal link, Jena Economic Research Papers, 2015-025.
• Cantner, Uwe, Holger Graf, Michael Rothgang and Tina Wolf (2015), Cluster Ambidexterity towards Exploration and Exploitation Strategies and Cluster ManagementExternal link, Jena Economic Research Papers, 2015-024.
• Cantner, Uwe, Holger Graf, Johannes Herrmann and Martin Kalthaus (2014), The Policy Mixs Influence on Inventor Networks in Renewable Energies, presented at the 14th ISS Conference, 27.-30. July, Jena.
• Rothgang, M., U. Cantner, J. Dehio, D. Engel, M. Fertig, H. Graf, S. Hinzmann, E. Linshalm, M. Ploder, A.-M. Scholz and S. Töpfer (2014), Begleitende Evaluierung des Förderinstruments Spitzencluster-Wettbewerb des BMBF External link- Abschlussbericht, RWI Materialien RWI
• Rothgang, M., U. Cantner, J. Dehio, D. Engel, M. Fertig, H. Graf, S. Hinzmann, E. Linshalm, M. Ploder, A.-M. Scholz and S. Töpfer (2014), Begleitende Evaluierung des Förderinstruments Spitzencluster-Wettbewerb des BMBF Forschungsvorhaben des Bundesministeriums für Bildung und Forschung AbschlussberichtExternal link  Kurzfassung 11/20084/2014, RWI Materialien , Heft 83
• Broekel, Tom and Holger Graf (2010), Structural properties of cooperation networks in Germany: From basic to applied researchExternal link, Jena Economic Research Papers, 2010-078.
• Fritsch, Michael and Holger Graf (2010), How General Conditions Affect Regional Innovation Systems The Case of the Two GermanysExternal link, Jena Economic Research Papers, 2010-054.
• Graf, Holger (2009), Inventor networks in emerging key technologies: information technology vs. semiconductorsExternal link, Jena Economic Research Papers, 2009-059.
• Graf, Holger and Jens J. Krüger (2009), The Performance of Gatekeepers in Innovator NetworksExternal link, Jena Economic Research Papers, 2009-058.
• Cantner, Uwe and Holger Graf (2008), Interaction Structures in Local Innovation SystemsExternal link, Jena Economic Research Papers, 2008-040.
• Graf, Holger and Kristin Joel (2007), Das BioInstrumente-Cluster in Thüringen Auswertungen einer Befragung zur Entwicklung, Kooperation und Finanzierung der Unternehmen im Cluster, Abschlussbericht, 12/2007.
• Cantner, Uwe and Holger Graf (2007), Growth, Development and Structural Change of Innovator Networks The Case of JenaExternal link, Jena Economic Research Papers, 2007-090.
• Graf, Holger (2007), Gatekeepers in regional networks of innovatorsExternal link, Jena Economic Research Papers, 2007-054.
• Graf, Holger and Tobias Henning (2006), Public Research in Regional Networks of Innovators: A Comparative Study of Four East-German RegionsExternal link, Jenaer Schriften zur Wirtschaftswissenschaft, FSU Jena, 19/2006.
• Cantner, Uwe and Holger Graf (2004), The Network of Innovators in Jena: An Application of Social Network AnalysisExternal link, Jenaer Schriften zur Wirtschaftswissenschaft, FSU Jena, 04/2004.
• Cantner, Uwe, Dirk Fornahl and Holger Graf (2003), Innovationssystem und Gründungsgeschehen in Jena: Erste Erkenntnisse einer UnternehmensbefragungExternal link, Jenaer Schriften zur Wirtschaftswissenschaft, FSU Jena, 06/2003.
• Cantner, Uwe and Holger Graf (2003), Cooperation and Specialization in German Technology RegionsExternal link, Jenaer Schriften zur Wirtschaftswissenschaft, FSU Jena, 04/2003.

Master/PhD

• Economics of Innovation IV (Innovation Policy)
• Introduction to R
• Advanced Microeconomics
• Research Seminar: Patent data and networks