Cichy, Krzysztof, and Krzysztof Malaga. “The Quantity and Quality of Human Capital in Poland and USA Analyzed in the Framework of the Manuelli-Seshadri Model”. Economics and Business Review 6, no. 1 (June 30, 2006): 5–24. Accessed November 18, 2024. https://journals.ue.poznan.pl/ebr/article/view/525.