@article{GDZPPN00210055X,
title = {Incompressible branched surfaces.},
journal = {Inventiones mathematicae},
volume = {75},
year = {1984},
pages = {385-410},
zbl = {0539.57006},
url = {http://dml.mathdoc.fr/item/GDZPPN00210055X}
}
Oertel, U. Incompressible branched surfaces.. Inventiones mathematicae, Tome 75 (1984) pp. 385-410. http://gdmltest.u-ga.fr/item/GDZPPN00210055X/