@article{DCG_1995__14_3_131392,
     author = {A. Gabrielov and N. Vorobjov},
     title = {Complexity of {Stratifications} of {Semi-Pfaffian} {Sets.}},
     journal = {Discrete & computational geometry},
     pages = {71--92},
     publisher = {mathdoc},
     volume = {14},
     number = {3},
     year = {1995},
     zbl = {0832.68056},
     url = {http://geodesic.mathdoc.fr/item/DCG_1995__14_3_131392/}
}