@article{10_1090_S0894_0347_1994_1243770_0,
     author = {Bj\"orner, Anders and Lov\'asz, L\'aszl\'o},
     title = {Linear decision trees, subspace arrangements and {M\"obius} functions},
     journal = {Journal of the American Mathematical Society},
     pages = {677--706},
     year = {1994},
     volume = {07},
     number = {3},
     doi = {10.1090/S0894-0347-1994-1243770-0},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1994-1243770-0/}
}