  In the commended paper it is claimed that the proves of the
"Resitive-Wall-Mode theorem" by Pfirsch and Tasso [Nucl. Fusion \textbf{11},
259 (1971)] and extensions of that theorem for time dependent wall resistivity
and equilibrium plasma flow are not detailed and that there are limitations
restricting their applicability. In response, we provide here pertinent
detailed derivations showing that the proves of the above mentioned theorems
are rigorous and complete, unlike the considerations in the commended paper
which ignore the self adjointness of the operator $\nabla\times\nabla\times$
and the fact that the force operator in the linearized ideal MHD momentum
equation remains self adjoint in the presence of equilibrium flows. As a matter
of fact it is proved here that, because of the self adjointness of the operator
$\nabla\times\nabla\times$, a claimed in the commended paper additional term in
Ohm's law vanishes identically.
