TY  - JOUR
AU  - L. K. Orlik
TI  - On the exponential characteristic of a Volterra integral operator with periodic kernel depending on four variables
JO  - Differencialʹnye uravneniâ
PY  - 1989
SP  - 1819
EP  - 1821
VL  - 25
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1989_25_10_a27/
LA  - ru
ID  - DE_1989_25_10_a27
ER  -