Crass, Dirk (2020), Which firms use trademarks? Firm-level evidence from Germany on the role of distance, product quality and innovation, Industry and Innovation 27(7), 730-755 .

Crass, Dirk, Dirk Czarnitzki and Andrew Toole (2019), The Dynamic Relationship Between Investments in Brand Equity and Firm Profitability: Evidence Using Trademark Registrations, International Journal of the Economics of Business 26(1), 157-176.

Garcia Valero, Francisco, Francesco Pitton, Christian Rammer and Dirk Crass (2019), Protecting Innovation Through Patents and Trade Secrets: Evidence for Firms with a Single Innovation, International Journal of the Economics of Business 26(1), 117-156.

Crass, Dirk and Franz Schwiebacher (2017), The importance of trademark protection for product differentiation and innovation, Economia e Politica Industriale Volume 44, issue 2, 199-220.

Crass, Dirk, Georg Licht and Bettina Peters (2015), Intangible Assets and Investments at the Sector Level - Empirical Evidence for Germany, in: A. Bounfour, T. Miyagawa Springer International Publishing 57-111

Crass, Dirk (2014), The Impact of Brands on Innovation and Firm Perfromance - Empirical Evidence from Germany, United Nations University UNU-MERIT PhD Dissertation, Vol. 87, Universitaire Pers Maastricht , Maastricht, The Netherlands.

Crass, Dirk, Francisco Garcia Valero, Francesco Pitton and Christian Rammer (2016), Protecting Innovation Through Patents and Trade Secrets: Determinants and Performance Impacts for Firms with a Single Innovation, ZEW Discussion Paper No. 16-061, Mannheim , published in : International Journal of the Economics of Business

Crass, Dirk, Dirk Czarnitzki and Andrew Toole (2016), The Dynamic Relationship Between Investments in Brand Equity and Firm Profitability: Evidence Using Trademark Registrations, ZEW Discussion Paper No. 16-004, Mannheim , published in : International Journal of the Economics of Business

Crass, Dirk and Bettina Peters (2014), Intangible Assets and Firm-Level Productivity, ZEW Discussion Paper No. 14-120, Mannheim

Crass, Dirk (2014), The Impact of Brand Use on Innovation Performance – Empirical Results for Germany, ZEW Discussion Paper No. 14-119, Mannheim

Crass, Dirk (2014), Which Firms Use Trademarks – and Why? Representative Firm-Level Evidence from Germany, ZEW Discussion Paper No. 14-118, Mannheim

Crass, Dirk, Georg Licht and Bettina Peters (2014), Intangible Assets and Investments at the Sector Level – Empirical Evidence for Germany, ZEW Discussion Paper No. 14-049, Mannheim

Aschhoff, Birgit, Dirk Crass, Thorsten Doherr, Martin Hud, Paul Hünermund, Younes Iferd, Christian Köhler, Bettina Peters, Christian Rammer, Torben Schubert and Franz Schwiebacher (2014), Dokumentation zur Innovationserhebung 2013, ZEW-Dokumentation No. 14-01, Mannheim

Crass, Dirk and Franz Schwiebacher (2013), Do Trademarks Diminish the Substitutability of Products in Innovative Knowledge-Intensive Services?, ZEW Discussion Paper No. 13-061, Mannheim

Aschhoff, Birgit, Elisabeth Baier, Dirk Crass, Martin Hud, Paul Hünermund, Christian Köhler, Bettina Peters, Christian Rammer, Esther Schricke, Torben Schubert and Franz Schwiebacher (2013), Innovation in Germany - Results of the German CIS 2006 to 2010, ZEW-Dokumentation No. 13-01, Mannheim

Licht, Georg, Oliver Pfirrmann, Robert Strohmeyer, Stephan Heinrich, Vartuhi Tonoyan, Thomas Eckert, Michael Woywode, Dirk Crass and Mark O. Sellenthin (2012), Begleit- und Wirkungsforschung zur Hightech-Strategie: Ex-Post-Evaluierung der Fördermaßnahmen BioChance und BioChancePlus im Rahmen der Systemevaluierung , ZEW-Dokumentation No. 12-05, Mannheim

Aschhoff, Birgit, Michael Astor, Dirk Crass, Thomas Eckert, Stephan Heinrich, Georg Licht, Christian Rammer, Daniel Riesenberg, Niclas Rüffer, Robert Strohmeyer, Vartuhl Tonoyan and Michael Woywode (2012), Systemevaluierung "KMU-innovativ", ZEW-Dokumentation No. 12-04, Mannheim

Peters, Bettina, Georg Licht, Dirk Crass and Andreas Kladroba (2009), Soziale Erträge der FuE-Tätigkeit in Deutschland, Studien zum deutschen Innovationssystem , Mannheim und Essen.

Rammer, Christian, Dirk Crass, Thorsten Doherr, Martin Hud, Paul Hünermund, Younes Iferd, Christian Köhler, Bettina Peters, Torben Schubert and Franz Schwiebacher (2015), Innovationsverhalten der deutschen Wirtschaft - Indikatorenbericht zur Innovationserhebung 2014, Bundesministerium für Bildung und Forschung (BMBF), Mannheim

Rammer, Christian, Birgit Aschhoff, Dirk Crass, Thorsten Doherr, Martin Hud, Christian Köhler, Bettina Peters, Torben Schubert and Franz Schwiebacher (2014), Innovationsverhalten der deutschen Wirtschaft - Indikatorenbericht zur Innovationserhebung 2013, Bundesministerium für Bildung und Forschung (BMBF), Mannheim

Rammer, Christian, Birgit Aschhoff, Dirk Crass, Thorsten Doherr, Martin Hud, Christian Köhler, Bettina Peters, Torben Schubert and Franz Schwiebacher (2013), Innovationsverhalten der deutschen Wirtschaft. Indikatorenbericht zur Innovationserhebung 2012, Bundesministerium für Bildung und Forschung (BMBF), Mannheim

Rammer, Christian, Birgit Aschhoff, Dirk Crass, Thomas Eckert, Georg Licht, Michael Astor, Stephan Heinrich, Daniel Riesenberg, Michael Woywode, Robert Strohmeyer, Vartuhi Tonoyan and Niclas Rüffer (2012), Begleit- und Wirkungsforschung zur Hightech-Strategie: Systemevaluierung KMU-innovativ, Abschlussbericht, Bundesministerium für Bildung und Forschung (BMBF), Mannheim und Berlin

Licht, Georg, Dirk Crass, Thomas Eckert, Mark O. Sellenthin, Oliver Pfirrmann, Stephan Heinrich, Robert Strohmeyer, Vartuhi Tonoyan and Michael Woywode (2012), Ex-Post-Evaluierung der Fördermaßnahmen BioChance und BioChancePlus , Bundesministerium für Bildung und Forschung (BMBF), Mannheim

Rammer, Christian, Birgit Aschhoff, Dirk Crass, Thorsten Doherr, Martin Hud, Christian Köhler, Bettina Peters, Torben Schubert and Franz Schwiebacher (2012), Innovationsverhalten der deutschen Wirtschaft. Indikatorenbericht zur Innovationserhebung 2011, Bundesministerium für Bildung und Forschung (BMBF), Mannheim

Rammer, Christian, Birgit Aschhoff, Dirk Crass, Thorsten Doherr, Christian Köhler, Bettina Peters, Torben Schubert and Franz Schwiebacher (2011), Innovationsverhalten der Deutschen Wirtschaft. Indikatorenbericht zur Innovationserhebung 2010, Bundesministerium für Bildung und Forschung (BMBF), Mannheim

Crass, Dirk, Georg Licht and Bettina Peters (2010), Intangible Assets and Investments at the Sector Level – Empirical Evidence for Germany, EU-Kommission, Mannheim

Pesole, Annarosa, Jonathan Haskel, Vincent Delbecque, Dirk Crass, Bettina Peters and Harald Edquist (2010), Within-country analysis of intangible assets and investments at sector level and the level of the enterprise allowing for specific countries with the data , EU-Kommission, London

Crass, Dirk, Georg Licht, Bettina Peters and Wolfgang Sofka (2009), Time Series Estimates of Intangible Investments – Sensitivity Analysis for Germany, EU-Kommission, Mannheim

ZEW-Innovationserhebung 2014

ZEW-Innovationserhebung 2013

ZEW-Innovationserhebung 2012

ZEW-Innovationserhebung 2011

ZEW-Innovationserhebung 2010

SS 2015: Lecture and tutorial "Introduction to Economics", Ludwigshafen University of Applied Scienes, Ludwigshafen am Rhein, Germany more information

SS 2015: Seminar "Computer Aided Methods for Quantitative Analysis in Business and Economics", Pforzheim University , Germany

WS 2015/2016: Lecture and tutorial "Introduction to Economics", Ludwigshafen University of Applied Scienes, Ludwigshafen am Rhein, Germany more information

WS 2014/2015: Lecture and tutorial "Introduction to Economics", Ludwigshafen University of Applied Scienes, Ludwigshafen am Rhein, Germany more information

SS 2014: Seminar "Computer Aided Methods for Quantitative Analysis in Business and Economics", Pforzheim University , Germany

WS 2014/2015: Seminar "Computer Aided Methods for Quantitative Analysis in Business and Economics", Pforzheim University , Germany

SS 2014: Lecture and tutorial "Introduction to Economics", Ludwigshafen University of Applied Scienes, Ludwigshafen am Rhein, Germany more information

FS 2013: Lecture and tutorial "Introduction to Economics", Baden-Wuerttemberg Cooperative State University Mannheim (DHBW), Germany

FS 2012: Lecture and tutorial "Introduction to Economics", Baden-Wuerttemberg Cooperative State University Mannheim (DHBW), Germany

SS 2012: Course "Regional Economics", University of Applied Sciences Koblenz, Germany more information

03. – 03.2013 UNU-MERIT, Maastricht, Netherlands

09. – 10.2013 U.S. Department of Agriculture, Economic Research Service, Washington, D.C., United States of America

08. – 11.2012 University of Maryland, Baltimore, United States of America

02. – 03.2012 UNU-MERIT, Maastricht, Netherlands

07. – 09.2011 Imperial College Business School, London, United Kingdom