Graphical Schemes Designed to Display and Study the Long-term Variations of Schumann Resonance Rodríguez-Camacho, Jesús Gómez Lopera, Juan Francisco Salinas, Alfonso Fornieles-Callejón, Jesús Portí, Jorge Blanco-Navarro, David Carrión Pérez, María del Carmen Navarro Camba, Enrique 2025-01-30T07:18:47Z 2025-01-30T07:18:47Z 2019-09-02 conference output 27th European Signal Processing Conference (EUSIPCO) 2019 https://hdl.handle.net/10481/101024 DOI: 10.23919/Eusipco47968.2021 eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional IEEE