Jakimowicz, Aleksander, and Daniel Rzeczkowski. “Do Barriers to Innovation Impact Changes in Innovation Activities of Firms During Business Cycle? The Effect of the Polish Green Island”. Equilibrium. Quarterly Journal of Economics and Economic Policy 14, no. 4 (December 31, 2019): 631–676. Accessed May 17, 2024. https://journals.economic-research.pl/eq/article/view/1746.