@article{MZM_1997_62_6_a3,
     author = {V. N. Karpushkin},
     title = {The number of components of complements to level surfaces of partially harmonic polynomials},
     journal = {Matemati\v{c}eskie zametki},
     pages = {831--835},
     publisher = {mathdoc},
     volume = {62},
     number = {6},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1997_62_6_a3/}
}