Batóg, J. 2015. Identification and Significance of Outliers in Models of Income Convergence. Krakow Review of Economics and Management/Zeszyty Naukowe Uniwersytetu Ekonomicznego w Krakowie. 5(941) (Nov. 2015), 5–15. DOI:https://doi.org/10.15678/ZNUEK.2015.0941.0501.