6. Ahmad, M. (2021). Non-linear dynamics of innovation activities over the business cycles: Empirical evidence from OECD economies. Technology in Society, 67, 101721. [DOI:10.1016/j.techsoc.2021.101721]

7. Atasoy, B. S. (2017). Testing the environmental Kuznets curve hypothesis across the US: Evidence from panel mean group estimators. Renewable and Sustainable Energy Reviews, 77, 731-747. [DOI:10.1016/j.rser.2017.04.050]

8. Baker, S. R., Bloom, N., & Davis, S. J. (2016). Measuring economic policy uncertainty. The Quarterly Journal of Economics, 131(4), 1593-1636. [DOI:10.1093/qje/qjw024]

9. Bhattacharya, U., Hsu, P. H., Tian, X., & Xu, Y. (2017). What affects innovation more: policy or policy uncertainty? Journal of Financial and Quantitative Analysis, 52(5), 1869-1901. [DOI:10.1017/S0022109017000540]

10. Cheng, X., and Zhang, M. (2021). Corporate Social Responsibility, Tax Avoidance and Macroeconomic Uncertainty. International Conference on E-Commerce, E-Business and E-Government, (21), 28-30. [DOI:10.1145/3466029.3466042]

11. Chen, J. Y., Dimitrov, S., & Pun, H. (2019). The impact of government subsidy on supply Chinas' sustainability innovation. Omega, 86, 42-58. [DOI:10.1016/j.omega.2018.06.012]

12. Chen, J.; Shu, W.; Wang, X.; Sial, M.S.; Sehleanu, M.; Badulescu, D. (2022). The Impact of Environmental Uncertainty on Corporate Innovation: Empirical Evidence from an Emerging Economy. Int. J. Environ. Res. Public Health, 19, 334. [DOI:10.3390/ijerph19010334] [PMID] []

13. Dvouletý, O., Srhoj, S., & Pantea, S. (2021). Public SME grants and firm performance in European :union:: A systematic review of empirical evidence. Small Business Economics, 57(1), 243-263. [DOI:10.1007/s11187-019-00306-x]

14. Gulen, H., & Ion, M. (2016). Policy uncertainty and corporate investment. The Review of Financial Studies, 29(3), 523-564.

15. Guan, Y.; Zhang, L.; Zheng, L. (2021). Managerial liability and corporate innovation: Evidence from a legal shock. J. Corp. Finance, 69, 102022. [DOI:10.1016/j.jcorpfin.2021.102022]

16. He, F., Ma, Y., & Zhang, X. (2020). How does economic policy uncertainty affect corporate Innovation? - Evidence from China listed companies. International Review of Economics & Finance, 67, 225-239. [DOI:10.1016/j.iref.2020.01.006]

17. Hu, S., & Gong, D. (2019). Economic policy uncertainty, prudential regulation and bank lending. Finance Research Letters, 29, 373-378. [DOI:10.1016/j.frl.2018.09.004]

18. Hewitt-Dundas, N., & Roper, S. (2010). Output additionality of public support for innovation: evidence for Irish manufacturing plants. European Planning Studies, 18(1), 107-122. [DOI:10.1080/09654310903343559]

19. Huang, Y., & Luk, P. (2020). Measuring economic policy uncertainty in China. China Economic Review, 59, 101367 [DOI:10.1016/j.chieco.2019.101367]

20. Khan, M. A., Qin, X., Jebran, K., & Ullah, I. (2020). Uncertainty and R&D investment: Does product market competition matter? Research in International Business and Finance, 52, 101167. [DOI:10.1016/j.ribaf.2019.101167]

21. Kun W, Hu X, Liu F (2022) The impact of economic policy uncertainty on firms' investment in innovation: Evidence from Chinese listed firms. PLoS ONE 17(11): e0272983. [DOI:10.1371/journal.pone.0272983] [PMID] []

22. Jia, L., Nam, E., & Chun, D. (2021). Impact of Chinese government subsidies on enterprise innovation: Based on a three-dimensional perspective. Sustainability, 13(3), 1288. [DOI:10.3390/su13031288]

23. Lee, C. Y. (2011). The differential effects of public R&D support on firm R&D: Theory and evidence from multi-country data. Technovation, 31(5-6), 256-269 [DOI:10.1016/j.technovation.2011.01.006]

24. Lin, Y., Dong, D., & Wang, J. (2021). The negative impact of uncertainty on R&D investment: International evidence. Sustainability (Switzerland), 13(5). [DOI:10.3390/su13052746]

25. Liu, P., & Dong, D. (2020). Impact of economic policy uncertainty on trade credit provision: The role of social trust. Sustainability, 12(4), 1601 [DOI:10.3390/su12041601]

26. Liu, S., Du, J., Zhang, W., & Tian, X. (2021). Opening the box of subsidies: which is more effective for innovation?. Eurasian Business Review, 1-29 [DOI:10.1007/s40821-020-00178-2]

27. Li, Q., Wang, M., & Xiangli, L. (2021). Do government subsidies promote new-energy firms' innovation? Evidence from dynamic and threshold models. Journal of Cleaner Production, 286, 124992 [DOI:10.1016/j.jclepro.2020.124992]

28. Li, Y., Tong, Y., Ye, F., & Song, J. (2020). The choice of the government green subsidy scheme: innovation subsidy vs. product subsidy. International Journal of Production Research, 58(16), 4932-4946 [DOI:10.1080/00207543.2020.1730466]

29. Li, Z., Liao, G., Wang, Z., & Huang, Z. (2018). Green loan and subsidy for promoting clean production innovation. Journal of Cleaner Production, 187, 421-431. [DOI:10.1016/j.jclepro.2018.03.066]

30. Lim, C. Y., Wang, J., & Zeng, C. C. (2018). China's -mercantilist‖ government subsidies, the cost of debt and firm performance. Journal of Banking & Finance, 86, 37-52. [DOI:10.1016/j.jbankfin.2017.09.004]

31. Shen, X., & Lin, B. (2020). Policy incentives, R&D investment, and the energy intensity of China's manufacturing sector. Journal of Cleaner Production, 255, 120208. [DOI:10.1016/j.jclepro.2020.120208]

32. Wang, B., Khalid, S., & Mahmood, H. (2023). R&D Spending and Economic Policy Uncertainty in Asian Countries: an Advanced Panel Data Estimation Study. Journal of the Knowledge Economy. [DOI:10.1007/s13132-023-01285-x] [PMID] []

33. Wang, M., Hou X.H. (2015). Economic uncertainty, government subsidies and investment in technological innovation of enterprises. East China Economic Management (12), 95-100.

34. Xia, L., Gao, S., Wei, J., & Ding, Q. (2022). Government subsidy and corporate green innovation - Does board governance play a role? Energy Policy, 161, 112720. [DOI:10.1016/j.enpol.2021.112720]

35. Xu, Z. (2020). Economic policy uncertainty, cost of capital, and corporate innovation. Journal of Banking and Finance, 111. https://doi.org/10.1016/j.jbankfin.2019.105698 [DOI:10.1016/j.jbankfn.2019.105698]

36. You, J., Lin, L., Huang, J., & Xiao, M. (2020). When is cash king? International evidence on the value of cash across the business cycle. Review of Quantitative Finance and Accounting, 54, 1101-1131 [DOI:10.1007/s11156-019-00820-9]

37. Yu, J., Shi, X., Guo, D., & Yang, L. (2021). Economic policy uncertainty (EPU) and firm carbon emissions: evidence using a China provincial EPU index. Energy Economics, 94, 105071. [DOI:10.1016/j.eneco.2020.105071]

38. Zhang MengDie, Li ShiYu*, Siong Hook Law*, Tze San Ong. (2023). Economic Policy Uncertainty, Government Subsidy and R&D Investment: Evidence from the Chinese Pharmaceutical Manufacturing Industry. CEMJP, 31(2), 68-83. [DOI:10.57030/23364890.cemj.31.2.9]

39. Zúñiga‐Vicente, J. Á., Alonso‐Borrego, C., Forcadell, F. J., & Galán, J. I. (2014). Assessing the effect of public subsidies on firm R&D investment: a survey. Journal of economic surveys, 28(1), 36-67 [DOI:10.1111/j.1467-6419.2012.00738.x]