ŽIVĚLOVÁ, Iva - JÁNSKÝ, Jaroslav. The conditions of organic market development. In Agricultural economics. - Prague : Institute of Agricultural and Food Information, 2007. ISSN 0139-570X, 2007, vol. 53, no. 9, s. 403-410. Dostupné na : <http://www.agriculturejournals.cz/publicFiles/00385.pdf>