@article{IM_1979__52_142642,
     author = {Peter B. Shalen},
     title = {Separating, {Incompressible} {Surfaces} in {3-Manifolds.}},
     journal = {Inventiones mathematicae},
     pages = {105--126},
     publisher = {mathdoc},
     volume = {52},
     year = {1979},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM_1979__52_142642/}
}