Papailias, M. 2014. Research on the Social and Economic Differentiations in the Greek Rural Sector During the Period 1830-2030. Zeszyty Naukowe SGGW w Warszawie - Problemy Rolnictwa Światowego. 14, 4 (grudz. 2014), 116–122. DOI:https://doi.org/10.22630/PRS.2014.14.4.76.