@article{DCG_1994__11_3_131286,
     author = {D. Halperin},
     title = {On the {Complexity} of a {Single} {Cell} in {Certain} {Arrangements} of {Surfaces} {Related} to {Motion} {Planning.}},
     journal = {Discrete & computational geometry},
     pages = {1--34},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {1994},
     zbl = {0791.68162},
     url = {http://geodesic.mathdoc.fr/item/DCG_1994__11_3_131286/}
}