1. Trends in information infrastructure of enterprises
:VRANA, Ivan. Trends in information infrastructure of enterprises. In Agricultural economics : an international journal = mezinárodní vědecký časopis. - Prague : Institute of Agricultural and Food Information, 2006. ISSN 0139-570X, 2006, vol. 52, no. 4, s. 173-176. Available on Internet: <http://www.agriculturejournals.cz/publicFiles/58016.pdf>