On some methods of study of states on interval valued fuzzy sets

MICHALÍKOVÁ, Alžbeta - RIEČAN, Beloslav. On some methods of study of states on interval valued fuzzy sets. In Notes on intuitionistic fuzzy sets. - Sofia : Academic Publishing House, 2018. ISSN 1310-4926, 2018, vol. 24, no. 4, pp. 5-12. Dostupné na: https://doi.org/10.7546/nifs.2018.24.4.5-12.