@article{10_4064_fm_57_1_91_96,
     author = {R. Heath},
     title = {On open mappings and certain spaces satisfying the first countability axiom},
     journal = {Fundamenta Mathematicae},
     pages = {91--96},
     publisher = {mathdoc},
     volume = {57},
     number = {1},
     year = {1965},
     doi = {10.4064/fm-57-1-91-96},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-57-1-91-96/}
}