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@article{CM_1936__3__427_0, author = {Birkhoff, Garrett}, title = {A note on topological groups}, journal = {Compositio Mathematica}, pages = {427--430}, publisher = {Johnson Reprint Corporation}, volume = {3}, year = {1936}, zbl = {0015.00702}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CM_1936__3__427_0/} }
Birkhoff, Garrett. A note on topological groups. Compositio Mathematica, Tome 3 (1936), pp. 427-430. http://geodesic.mathdoc.fr/item/CM_1936__3__427_0/