@article{ZNSL_1991_192_a0,
     author = {N. N. Vorobjov (jr.) and D. Yu. Grigor'ev},
     title = {Finding connected components of a semialgebraic set in subexponential time},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {3--46},
     publisher = {mathdoc},
     volume = {192},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1991_192_a0/}
}