TY  - JOUR
AU  - Lars Ernström
TI  - The spectrum associated to a radical operation.
JO  - Mathematica Scandinavica
PY  - 1993
SP  - 5
EP  - 14
VL  - 73
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MS2_1993__73_2_167252/
ID  - MS2_1993__73_2_167252
ER  -