@article{GDZPPN002226057,
title = {Line Fields with Branch Defects.},
journal = {Manuscripta mathematica},
volume = {46},
year = {1984},
pages = {297-300},
zbl = {0588.55014},
url = {http://dml.mathdoc.fr/item/GDZPPN002226057}
}
Jänich, Klaus. Line Fields with Branch Defects.. Manuscripta mathematica, Tome 46 (1984) pp. 297-300. http://gdmltest.u-ga.fr/item/GDZPPN002226057/