A note on the complex and real operator norms of real matrices
ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique, Tome 20 (1986) no. 3, pp. 427-428.
@article{M2AN_1986__20_3_427_0,
     author = {Crouzeix, Michel},
     title = {A note on the complex and real operator norms of real matrices},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis - Mod\'elisation Math\'ematique et Analyse Num\'erique},
     pages = {427--428},
     publisher = {AFCET - Gauthier-Villars},
     address = {Paris},
     volume = {20},
     number = {3},
     year = {1986},
     zbl = {0609.15013},
     mrnumber = {862785},
     language = {en},
     url = {http://www.numdam.org/item/M2AN_1986__20_3_427_0/}
}
TY  - JOUR
AU  - Crouzeix, Michel
TI  - A note on the complex and real operator norms of real matrices
JO  - ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique
PY  - 1986
DA  - 1986///
SP  - 427
EP  - 428
VL  - 20
IS  - 3
PB  - AFCET - Gauthier-Villars
PP  - Paris
UR  - http://www.numdam.org/item/M2AN_1986__20_3_427_0/
UR  - https://zbmath.org/?q=an%3A0609.15013
UR  - https://www.ams.org/mathscinet-getitem?mr=862785
LA  - en
ID  - M2AN_1986__20_3_427_0
ER  - 
Crouzeix, Michel. A note on the complex and real operator norms of real matrices. ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique, Tome 20 (1986) no. 3, pp. 427-428. http://www.numdam.org/item/M2AN_1986__20_3_427_0/