TY  - JOUR
AU  - Ehrhard Behrends
TI  - Operators which respect norm intervals
JO  - Studia Mathematica
PY  - 1981
SP  - 203
EP  - 220
VL  - 70
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/sm-70-3-203-220/
DO  - 10.4064/sm-70-3-203-220
LA  - en
ID  - 10_4064_sm_70_3_203_220
ER  -