@article{SM_1984_49_1_a7,
     author = {P. M. Elizarov and Yu. S. Ilyashenko},
     title = {Remarks on the orbital analytic classification of germs of vector fields},
     journal = {Sbornik. Mathematics},
     pages = {111--124},
     year = {1984},
     volume = {49},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1984_49_1_a7/}
}