TY  - JOUR
AU  - Yu. Sh. Abramov
TI  - Duality in extremal problems generated by spectral problems for operator pencils
JO  - Doklady Akademii Nauk
PY  - 1980
SP  - 777
EP  - 780
VL  - 255
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1980_255_4_a0/
LA  - ru
ID  - DAN_1980_255_4_a0
ER  -