  The aim of this note is to rebut some unsupported claims which cast
suspicions on the results of the papers titled: "Extrinsic extinction
cross-section in the multiple acoustic scattering by fluid particles," [J.
Appl. Phys. 121, 144904 (2017)]; and "Intrinsic acoustical cross sections in
the multiple scattering by a pair of rigid cylindrical particles in 2D," [J.
Phys. D: Appl. Phys. 50, 325601 (2017)]. It is important to emphasize that the
results presented in these works are entirely physical and valid, in complete
agreement with the basic physical law of energy conservation. Moreover,
scientific convincing results in peer-reviewed publications should be supported
by illustrative examples using rigorous methods as well as computational
analyses and solid conclusive evidence, instead of raising mere suspicions with
baseless speculations.
