TY  - JOUR
AU  - Argyros, Ioannis K.
TI  - Some sufficient conditions for finding a second solution of the quadratic equation in a Banach space
JO  - Mathematica slovaca
PY  - 1988
SP  - 403
EP  - 408
VL  - 38
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MASLO_1988__38_4_a13/
LA  - en
ID  - MASLO_1988__38_4_a13
ER  -