Alexander P. Sostak, Ingrida Uljane, Aleksandrs Elkins. Many-level fuzzy rough approximation spaces induced by many-level fuzzy preorders and the related ditopological structures. In Vilém Novák, Vladimír Marík, Martin Stepnicka, Mirko Navara, Petr Hurtík, editors, Proceedings of the 11th Conference of the European Society for Fuzzy Logic and Technology, EUSFLAT 2019, Prague, Czech Republic, September 9-13, 2019. Volume 1 of Atlantis Studies in Uncertainty Modelling, Atlantis Press, 2019. [doi]
Abstract is missing.