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@article{DE_1979_15_2_a6, author = {V. P. Nozdracheva}, title = {A congruence function in the vicinity of a structurally stable saddle}, journal = {Differencialʹnye uravneni\^a}, pages = {252--261}, publisher = {mathdoc}, volume = {15}, number = {2}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1979_15_2_a6/} }
V. P. Nozdracheva. A congruence function in the vicinity of a structurally stable saddle. Differencialʹnye uravneniâ, Tome 15 (1979) no. 2, pp. 252-261. http://geodesic.mathdoc.fr/item/DE_1979_15_2_a6/