vol. 32, no. 2 (2012)

On the extended and Allan spectra and topological radii
Hugo Arizmendi-Peimbert, Angel Carrillo-Hoyo, Jairo Roa-Fajardo
Opuscula Math. 32, no. 2 (2012), 227-234, http://dx.doi.org/10.7494/OpMath.2012.32.2.227