TY  - JOUR
AU  - Omar Hirzallah
AU  - Fuad Kittaneh
AU  - Khalid Shebrawi
TI  - Numerical radius inequalities for $2\times  2$ operator matrices
JO  - Studia Mathematica
PY  - 2012
SP  - 99
EP  - 115
VL  - 210
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/sm210-2-1/
DO  - 10.4064/sm210-2-1
LA  - en
ID  - 10_4064_sm210_2_1
ER  -