TY  - JOUR
AU  - S. I. Mitrokhin
TI  - On the asymptotics of  spectrum of an even-order differential operator with a delta-function potential
JO  - Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences
PY  - 2021
SP  - 634
EP  - 662
VL  - 25
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VSGTU_2021_25_4_a2/
LA  - ru
ID  - VSGTU_2021_25_4_a2
ER  -