TY  - JOUR
AU  - V. P. Nozdracheva
TI  - A congruence function in the vicinity of a structurally stable saddle
JO  - Differencialʹnye uravneniâ
PY  - 1979
SP  - 252
EP  - 261
VL  - 15
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1979_15_2_a6/
LA  - ru
ID  - DE_1979_15_2_a6
ER  -