@article{DCG_1990__5_2_131110,
     author = {H. Edelsbrunner and E. Welzl and L.J. Guibas and K.L. Clarkson and M. Sharir},
     title = {Combinatorial {Complexity} {Bounds} for {Arrangements} of {Curves} and {Spheres.}},
     journal = {Discrete & computational geometry},
     pages = {99--160},
     publisher = {mathdoc},
     volume = {5},
     number = {2},
     year = {1990},
     zbl = {0704.51003},
     url = {http://geodesic.mathdoc.fr/item/DCG_1990__5_2_131110/}
}