Kolar, L., Kuzel, S., & Gergel, J. (2002). Perspectives of Czech Agriculture in Areas of Lower Productivity and Cooperation of Agriculture with Chemical Research and Industry. Chemické Listy, 96(7). Získáno z http://ww.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/2313