@article{1077473258,
author = {Finan, E. J.},
title = {Cyclic subsets of a group},
journal = {Duke Math. J.},
volume = {12},
number = {1},
year = {1945},
pages = { 509-513},
language = {en},
url = {http://dml.mathdoc.fr/item/1077473258}
}
Finan, E. J. Cyclic subsets of a group. Duke Math. J., Tome 12 (1945) no. 1, pp. 509-513. http://gdmltest.u-ga.fr/item/1077473258/