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@article{FAA_1978_12_3_a10, author = {R. I. Bogdanov}, title = {Degree of degeneracy of a singular point of a vector field on the plane}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {70--71}, publisher = {mathdoc}, volume = {12}, number = {3}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1978_12_3_a10/} }
R. I. Bogdanov. Degree of degeneracy of a singular point of a vector field on the plane. Funkcionalʹnyj analiz i ego priloženiâ, Tome 12 (1978) no. 3, pp. 70-71. http://geodesic.mathdoc.fr/item/FAA_1978_12_3_a10/