2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/8274In this work we have tested conception of energy dependent power spectra which can be applied for analysis of X-ray dynamic spectra of cataclysmic variables. Using this technique we can study properties of variability in different energy ranges.2 pages, 2 figures. To appear in the Proceedings of the conference "Astrophysics of Cataclysmic Variables and Related Objects", 11-16 July 2004, Strasbourg, FranceAstrophysicstext