@article{ZNSL_1984_137_a1,
     author = {N. N. Vorobjov (Jr.)},
     title = {Bounds of real roots of a~system of algebraic equations},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {7--19},
     year = {1984},
     volume = {137},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1984_137_a1/}
}