%0 Journal Article %A Porter, John E. %T Monotonically normal $e$-separable spaces may not be perfect %J Commentationes Mathematicae Universitatis Carolinae %D 2018 %P 391-398 %V 59 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14712/1213-7243.2015.253/ %R 10.14712/1213-7243.2015.253 %G en %F 10_14712_1213_7243_2015_253