@article{1256054456,
author = {Giffen, Charles H.},
title = {Cyclic branched coverings of doubled curves in $3$-manifolds},
journal = {Illinois J. Math.},
volume = {11},
number = {4},
year = {1967},
pages = { 644-646},
language = {en},
url = {http://dml.mathdoc.fr/item/1256054456}
}
Giffen, Charles H. Cyclic branched coverings of doubled curves in $3$-manifolds. Illinois J. Math., Tome 11 (1967) no. 4, pp. 644-646. http://gdmltest.u-ga.fr/item/1256054456/