@article{1077376075,
author = {Hagan, Melvin R.},
title = {Upper semi-continuous decompositions and factorization of certain non-continuous transformations},
journal = {Duke Math. J.},
volume = {32},
number = {1},
year = {1965},
pages = { 679-687},
language = {en},
url = {http://dml.mathdoc.fr/item/1077376075}
}
Hagan, Melvin R. Upper semi-continuous decompositions and factorization of certain non-continuous transformations. Duke Math. J., Tome 32 (1965) no. 1, pp. 679-687. http://gdmltest.u-ga.fr/item/1077376075/