@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/