TY  - JOUR
AU  - N. N. Frolov
TI  - Homeomorphism of Hilbert spaces induced by a differential operator
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 1981
SP  - 89
EP  - 90
VL  - 15
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_1981_15_4_a16/
LA  - ru
ID  - FAA_1981_15_4_a16
ER  -