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