TY  - JOUR
AU  - V. M. Babich
TI  - Finding of the saddle point for the ease of an ellipses
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1970
SP  - 20
EP  - 24
VL  - 17
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1970_17_a2/
LA  - ru
ID  - ZNSL_1970_17_a2
ER  -