@article{IM_1980__56_142694,
     author = {Peter Orlik and Louis Solomon},
     title = {Combinatorics and {Topology} of {Complements} of {Hyperplanes.}},
     journal = {Inventiones mathematicae},
     pages = {167--190},
     publisher = {mathdoc},
     volume = {56},
     year = {1980},
     zbl = {0432.14016},
     url = {http://geodesic.mathdoc.fr/item/IM_1980__56_142694/}
}