@article{10_4064_fm_42_2_276_288,
     author = {M. Fort},
     title = {Category theorems},
     journal = {Fundamenta Mathematicae},
     pages = {276--288},
     year = {1955},
     volume = {42},
     number = {2},
     doi = {10.4064/fm-42-2-276-288},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-42-2-276-288/}
}