Kozera, A., and F. Wysocki. “FINANCIAL SITUATION OF FARMERS HOUSEHOLDS IN COMPARISON WITH OTHER SOCIO-ECONOMIC GROUPS”. Journal of Agribusiness and Rural Development, Vol. 33, no. 3, Dec. 2014, pp. 85-99, http://www1.up.poznan.pl/jard/index.php/jard/article/view/392.