P. Trebichalský, J. Molnárová, A. Vollmannová, J. Musilová, and J. Tomáš, “THE EFFECTS OF VARIOUS FERTILIZATION AND TILLAGE ON UPTAKE Cu, Zn TO SOME VARIETIES OF BARLEY GRAIN”, J microb biotech food sci, vol. 2, no. 3, pp. 1050–1057, Dec. 2012.