@article{1255380674,
author = {Fort, M. K.},
title = {Mappings on $S^{1}$ into one-dimensional spaces},
journal = {Illinois J. Math.},
volume = {1},
number = {1},
year = {1957},
pages = { 505-508},
language = {en},
url = {http://dml.mathdoc.fr/item/1255380674}
}
Fort, M. K. Mappings on $S^{1}$ into one-dimensional spaces. Illinois J. Math., Tome 1 (1957) no. 1, pp. 505-508. http://gdmltest.u-ga.fr/item/1255380674/