@article{1028989913,
author = {Plunkett, R. L.},
title = {A theorem about mappings of a topological group into the circle.},
journal = {Michigan Math. J.},
volume = {2},
number = {1},
year = {1953},
pages = { 123-125},
language = {en},
url = {http://dml.mathdoc.fr/item/1028989913}
}
Plunkett, R. L. A theorem about mappings of a topological group into the circle.. Michigan Math. J., Tome 2 (1953) no. 1, pp. 123-125. http://gdmltest.u-ga.fr/item/1028989913/