@article{10_14712_1213_7243_2015_253,
     author = {Porter, John E.},
     title = {Monotonically normal $e$-separable spaces may not be perfect},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {391--398},
     publisher = {mathdoc},
     volume = {59},
     number = {3},
     year = {2018},
     doi = {10.14712/1213-7243.2015.253},
     mrnumber = {3861561},
     zbl = {06940879},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.14712/1213-7243.2015.253/}
}