@article{10_4064_fm_85_1_9_17,
     author = {Krzysztof Nowi\'nski},
     title = {Extension of closed mappings},
     journal = {Fundamenta Mathematicae},
     pages = {9--17},
     publisher = {mathdoc},
     volume = {85},
     number = {1},
     year = {1974},
     doi = {10.4064/fm-85-1-9-17},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-85-1-9-17/}
}