@article{GDZPPN002233126,
title = {Double coverings of rational surface.},
journal = {Manuscripta mathematica},
volume = {76},
year = {1992},
pages = {279-292},
zbl = {0755.12004},
url = {http://dml.mathdoc.fr/item/GDZPPN002233126}
}
Yoshihara, Hisao. Double coverings of rational surface.. Manuscripta mathematica, Tome 76 (1992) pp. 279-292. http://gdmltest.u-ga.fr/item/GDZPPN002233126/