TY  - JOUR
AU  - Liu, W. B.
AU  - Rubio, J. E.
TI  - A unified optimality condition for eigenvalue problems
JO  - Kybernetika
PY  - 1993
SP  - 249
EP  - 255
VL  - 29
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/KYB_1993__29_3_a4/
LA  - en
ID  - KYB_1993__29_3_a4
ER  -