@article{CMUC_1974__15_3_a14,
     author = {Trnkov\'a, V\v{e}ra},
     title = {Spaces which admit negative powers and all roots {(Preliminary} communication)},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {571--572},
     publisher = {mathdoc},
     volume = {15},
     number = {3},
     year = {1974},
     mrnumber = {0354917},
     zbl = {0292.20064},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1974__15_3_a14/}
}