Bernardelli, Michał, Mariusz Próchniak, and Bartosz Witkowski. “Time Stability of the Impact of Institutions on Economic Growth and Real Convergence of the EU Countries: Implications from the Hidden Markov Models Analysis”. Equilibrium. Quarterly Journal of Economics and Economic Policy 16, no. 2 (June 30, 2021): 285–323. Accessed May 18, 2024. https://journals.economic-research.pl/eq/article/view/1883.