ONDRÁŠKOVÁ, Adriena; ŠEVČÍK, Sebastián. The determination of Schumann resonance mode frequencies using iterative procedure of complex demodulation. Contributions to Geophysics and Geodesy, [S. l.], v. 43, n. 4, p. 305–326, 2013. DOI: 10.2478/congeo-2013-0018. Disponível em: https://journals.savba.sk/index.php/cgg/article/view/5188. Acesso em: 4 feb. 2026.