2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/25936We show that the method of calculations of the Debye-Waller factors for IC structures by J.D. Axe, Phys. Rev. (1971), B 21, 4181, is not applicable for such calculations. The set of variables, which should be used for such calculations, is the phase $ϕ$ and the amplitude of the IC modulation, but not the real and imaginary parts of the complex IC modulation function.4 pagesMaterials Sciencetext