%0 Journal Article %A Sajbura, Katarzyna %T Level sets of continuous functions increasing with respect to each variable %J Discussiones Mathematicae. Differential Inclusions, Control and Optimization %D 2005 %P 19-26 %V 25 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMDICO_2005_25_1_a1/ %G en %F DMDICO_2005_25_1_a1