@article{FAA_1986_20_4_a0,
     author = {G. R. Belitskii},
     title = {Smooth equivalence of germs of vector fields with a single zero eigenvalue or a pair of purely imaginary eigenvalues},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {1--8},
     publisher = {mathdoc},
     volume = {20},
     number = {4},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1986_20_4_a0/}
}