TY  - JOUR
AU  - I. S. Kats
TI  - Generalization of an asymptotic formula of V.\,A.~Marchenko for spectral functions of a~second-order boundary value problem
JO  - Izvestiya. Mathematics 
PY  - 1973
SP  - 424
EP  - 438
VL  - 7
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1973_7_2_a10/
LA  - en
ID  - IM2_1973_7_2_a10
ER  -