The "a trous" nvantelet transform versus clasical methods for the improvement of solar images. - Eleni Christopoulou; Athanassios N. Skodras; A. A. Georgakilas (DSP, 2002)

Time series analysis of sunspot oscillations using the wavelet transform. - Eleni Christopoulou; Athanassios N. Skodras; A. A. Georgakilas (DSP, 2002)