  In this note we re-propose the arguments presented in Vio (2005) examining
the superiority of the 'bi-parametric scale adaptive filter' (BSAF) when
dealing with source detection as claimed by (Lopez-Caniego 2005a) and confirmed
in Lopez-Caniego (2005b). We suggest here that the dispute can be easily solved
if these authors provide the community with a detailed derivation of a basic
equation.
