TY  - JOUR
AU  - B. N. Khimchenko
TI  - On a theorem of M.\,V.~Keldysh and M.\,A.~Lavrent’ev
JO  - Doklady Akademii Nauk
PY  - 1970
SP  - 46
EP  - 47
VL  - 192
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1970_192_1_a10/
LA  - ru
ID  - DAN_1970_192_1_a10
ER  -