Bartak, J. and Jabłoński, Łukasz 2017. The Importance of Income Inequality for Human Capital Investment in the Period 1970–2012. Krakow Review of Economics and Management/Zeszyty Naukowe Uniwersytetu Ekonomicznego w Krakowie. 2(962) (Jul. 2017), 55–70. DOI:https://doi.org/10.15678/ZNUEK.2017.0962.0204.