@article{1077374793,
author = {Church, P. T. and Hemmingsen, E.},
title = {Light open maps on $n$ -manifolds, III},
journal = {Duke Math. J.},
volume = {30},
number = {1},
year = {1963},
pages = { 379-389},
language = {en},
url = {http://dml.mathdoc.fr/item/1077374793}
}
Church, P. T.; Hemmingsen, E. Light open maps on $n$ -manifolds, III. Duke Math. J., Tome 30 (1963) no. 1, pp. 379-389. http://gdmltest.u-ga.fr/item/1077374793/