TY  - JOUR
AU  - S. V. Petras
TI  - Continuous dependence of poles of the scattering matrix on coefficients of an elliptic operator
JO  - Informatics and Automation
PY  - 1983
SP  - 132
EP  - 136
VL  - 159
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TRSPY_1983_159_a7/
LA  - ru
ID  - TRSPY_1983_159_a7
ER  -