TY  - JOUR
AU  - Carpintero, Carlos
AU  - Gutiérrez, Alexander
AU  - Rosas, Ennis
AU  - Sanabria, José
TI  - A note on preservation of spectra for two given operators
JO  - Mathematica Bohemica
PY  - 2020
SP  - 113
EP  - 126
VL  - 145
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/MB.2019.0038-18/
DO  - 10.21136/MB.2019.0038-18
LA  - en
ID  - 10_21136_MB_2019_0038_18
ER  -