@article{IM_1991__105_3_143913,
     author = {Nathan Habegger and Leslie Saper},
     title = {Intersection cohomology of cs-spaces and {Zeeman's} filtration.},
     journal = {Inventiones mathematicae},
     pages = {247--272},
     publisher = {mathdoc},
     volume = {105},
     number = {3},
     year = {1991},
     zbl = {0759.55003},
     url = {http://geodesic.mathdoc.fr/item/IM_1991__105_3_143913/}
}