TY  - JOUR
AU  - M. M. Malamud
TI  - On the Birman problem in the theory of nonnegative symmetric operators with compact inverse
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 2023
SP  - 111
EP  - 116
VL  - 57
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_2023_57_2_a8/
LA  - ru
ID  - FAA_2023_57_2_a8
ER  -