ZIOLKOWSKA, Jadwiga - JECHLITSCHKA, K. - KIRSCHKE, D. Global implications of national price policies on the wheat market - quantitative assessment of world market effects. In Agricultural economics. - Prague : Institute of Agricultural and Food Information, 2009. ISSN 0139-570X, 2009, vol. 55, no. 10, s. 475-480. Dostupné na : <http://www.agriculturejournals.cz/publicFiles/12075.pdf>