<mark>Montalvo, J. G., & Reynal-Querol, M. (2005a). Ethnic polarization, potential conflict, and civil wars.</mark> _<mark>American Economic Review</mark>_ <mark>, 95(3), 796-816.</mark>

- <mark>Nathan, M. (2015). Same difference? Minority ethnic inventors, diversity and innovation in the UK.</mark> _<mark>Journal of Economic Geography</mark>_ <mark>,</mark> _<mark>15</mark>_ <mark>(1), 129-168.</mark>

- <mark>Nooteboom, B. (1994). Innovation and diffusion in small firms: theory and evidence.</mark> _<mark>Small Business Economics</mark>_ <mark>, 6(5), 327-347.</mark>

- <mark>Østergaard, C. R., Timmermans, B., & Kristinsson, K. (2011). Does a different view create something new? The effect of employee diversity on innovation.</mark> _<mark>Research Policy</mark>_ <mark>,</mark> _<mark>40</mark>_ <mark>(3), 500-509.</mark>

- <mark>Ottaviano, G. I., & Peri, G. (2005). Cities and cultures.</mark> _<mark>Journal of Urban Economics</mark>_ <mark>,</mark> _<mark>58</mark>_ <mark>(2), 304337.</mark>

- <mark>Ottaviano, G. I., & Peri, G. (2006). The economic value of cultural diversity: evidence from US cities.</mark> _<mark>Journal of Economic Geography</mark>_ <mark>, 6(1), 9-44.</mark>

- <mark>Ozgen, C., Nijkamp, P., & Poot, J. (2012). Immigration and innovation in European regions. In</mark> _<mark>Migration impact assessment</mark>_ <mark>. Edward Elgar Publishing.</mark>

- <mark>Ozgen, C., Nijkamp, P., & Poot, J. (2013). The impact of cultural diversity on firm innovation: evidence from Dutch micro-data.</mark> _<mark>iza Journal of Migration</mark>_ <mark>,</mark> _<mark>2</mark>_ <mark>(1), 1-24.</mark>

- Ozgen, C., Peters, C., Niebuhr, A., Nijkamp, P., & Poot, J. (2014). Does cultural diversity of migrant employees affect innovation? _International Migration Review_ , _48_ (1), 377–416.

- <mark>Parrotta, P., Pozzoli, D., & Pytlikova, M. (2014b). Labor diversity and firm productivity.</mark> _<mark>European Economic Review</mark>_ <mark>,</mark> _<mark>66</mark>_ <mark>, 144-179.</mark>

- <mark>Parrotta, P., Pozzoli, D., & Pytlikova, M. (2014a). The nexus between labor diversity and firm’s innovation.</mark> _<mark>Journal of Population Economics</mark>_ <mark>,</mark> _<mark>27</mark>_ <mark>(2), 303-364.</mark>

- <mark>Pfeifer, C. (2015). The nexus between top managers’ human capital and firm productivity.</mark> _<mark>Applied Economics Letters</mark>_ <mark>,</mark> _<mark>22</mark>_ <mark>(12), 982-986.</mark>

- Psychogios, A., Szamosi, L., Prouska, R., & Brewster, C. (2016). A three-fold framework for understanding HRM practices in South-Eastern European SMEs. _Employee Relations_ , 38(3), 310–331.

- <mark>Putnam, R. D. (2007). E pluribus unum: Diversity and community in the twenty‐first century the 2006 Johan Skytte Prize Lecture.</mark> _<mark>Scandinavian Political Studies</mark>_ <mark>,</mark> _<mark>30</mark>_ <mark>(2), 137-174.</mark>

- <mark>Sparber, C. (2009). Racial diversity and aggregate productivity in U.S. industries: 1980– 2000.</mark> _<mark>Southern Economic Journal</mark>_ <mark>,</mark> _<mark>75</mark>_ <mark>(3), 829-856.</mark>

- <mark>Storey, D. J. (2004). Exploring the link, among small firms, between management training and firm performance: a comparison between the UK and other OECD countries.</mark> _<mark>The International Journal of Human Resource Management</mark>_ <mark>, 15(1), 112-130.</mark>

- <mark>Suedekum, J., Wolf, K., & Blien, U. (2014). Cultural diversity and local labour markets.</mark> _<mark>Regional Studies</mark>_ <mark>,</mark> _<mark>48</mark>_ <mark>(1), 173-191.</mark>

- <mark>Syverson, C. (2011). What determines productivity?.</mark> _<mark>Journal of Economic literature</mark>_ <mark>,</mark> _<mark>49</mark>_ <mark>(2), 32665.</mark>

- <mark>Thompson, P. (2010). Learning by doing.</mark> _<mark>Handbook of the Economics of Innovation</mark>_ <mark>,</mark> _<mark>1</mark>_ <mark>, 429-476.</mark> Touchton, M. (2013). Dangers of diversity: Ethnic fractionalization and the rule of law. _Economics, Management, and Financial Markets_ , 8(1), 20-40.

- <mark>Trax, M., Brunow, S., & Suedekum, J. (2015). Cultural diversity and plant-level productivity.</mark> _<mark>Regional Science and Urban Economics</mark>_ <mark>,</mark> _<mark>53</mark>_ <mark>, 85-96.</mark>

- <mark>Treisman, D. (2000). The causes of corruption: a cross-national study.</mark> _<mark>Journal of Public Economics</mark>_ <mark>,</mark> _<mark>76</mark>_ <mark>(3), 399-457.</mark>

42