TAKÁČ, Ivan - MO, Di. High food prices and imput market imperfections. In Acta regionalia et environmentalica : the scientific journal for regional and environmental sciences. - Nitra : Slovenská poľnohospodárska univerzita v Nitre, 2008. ISSN 1336-5452, 2009, roč. 6, č. 1, s. 18-21.