Chmieliński, Paweł, and Agnieszka Otłowska. 2008. “CHANGES IN THE SOCIO-ECONOMIC STRUCTURE OF THE NON-FARMING RURAL POPULATION IN 2000–2005”. Acta Scientiarum Polonorum. Oeconomia 7 (1):25-32. https://aspe.sggw.edu.pl/article/view/847.