TY - JOUR AU - Porter, John E. TI - Monotonically normal $e$-separable spaces may not be perfect JO - Commentationes Mathematicae Universitatis Carolinae PY - 2018 SP - 391 EP - 398 VL - 59 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.14712/1213-7243.2015.253/ DO - 10.14712/1213-7243.2015.253 LA - en ID - 10_14712_1213_7243_2015_253 ER -