REIFF, Marian - SURMANOVÁ, Kvetoslava. Cluster analysis of EU agriculture. - Registrovaný: Web of Science. In Quantitative methods in economics : multiple criteria decision making XVIII. International scientific conference. Quantitative methods in economics : multiple criteria decision making XVIII : proceedings of the [18th] international scientific conference : 25th may - 27th may 2016, Vrátna, Slovakia. - Bratislava : Letra Interactive, 2016. ISBN 978-80-972328-0-1, s. 322-326. VEGA 1/0285/14.