@article{1077471942,
author = {Peiser, Alfred M.},
title = {Covering mappings},
journal = {Duke Math. J.},
volume = {10},
number = {1},
year = {1943},
pages = { 305-307},
language = {en},
url = {http://dml.mathdoc.fr/item/1077471942}
}
Peiser, Alfred M. Covering mappings. Duke Math. J., Tome 10 (1943) no. 1, pp. 305-307. http://gdmltest.u-ga.fr/item/1077471942/