%0 Journal Article %A B. O. Onasanya %A S. Hošková-Mayerová %T Some topological and algebraic properties of-level subsets of a fuzzy subset A of X %J Analele Universităţii "Ovidius" Constanţa Seria Matematică %D 2018 %V XXVI %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/ASUO_2018_XXVI_3_a17/ %F ASUO_2018_XXVI_3_a17