TY  - JOUR
AU  - Yu. Sh. Abramov
TI  - Duality in spectral optimization and numerical ranges of a~family of self-adjoint operators
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1982
SP  - 189
EP  - 192
VL  - 107
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1982_107_a12/
LA  - ru
ID  - ZNSL_1982_107_a12
ER  -