TY  - JOUR
AU  - I. M. Koval'chik
TI  - Linear equations with functional derivatives
JO  - Doklady Akademii Nauk
PY  - 1970
SP  - 763
EP  - 766
VL  - 194
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1970_194_4_a6/
LA  - ru
ID  - DAN_1970_194_4_a6
ER  -