BOHÁČKOVÁ, Ivana. Structural changes of incomes of agricultural producers based on knowledge approach. In Agricultural economics : an international journal = mezinárodní vědecký časopis. - Prague : Institute of Agricultural and Food Information, 2006. ISSN 0139-570X, 2006, vol. 52, no. 3, s. 128-132. Dostupné na : <http://www.agriculturejournals.cz/publicFiles/58008.pdf>