KALINA, Martin - KRÁĽ, Pavol. Uninorms on interval-valued fuzzy sets. In ISFS 2015. The 2nd International Symposium on Fuzzy Sets. Golden Jubilee of Fuzzy Sets : Abstracts. Rzeszów, Poland, 3. - 4. 12. 2015. Rzeszów : University of Rzeszów, Faculty of Mathematics and Natural Sciences, 2015, S. 21-22. ISBN 978-83-7996-190-0. V*220/113/2015