TY  - JOUR
AU  - E. V. Kirillov
AU  - G. A. Zakirova
TI  - A direct spectral problem for $L$-spectrum of the perturbed operator with a multiple spectrum
JO  - Journal of computational and engineering mathematics
PY  - 2017
SP  - 19
EP  - 26
VL  - 4
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JCEM_2017_4_3_a2/
LA  - en
ID  - JCEM_2017_4_3_a2
ER  -