SETTIMI, Alessandro; SCIACCA, Umberto; BIANCHI, Cesidio. Scientific review on the Complex Eikonal, and research perspectives for the Ionospheric Ray-tracing and Absorption. Quaderni di Geofisica, [S. l.], v. 112, 2013. DOI: 10.13127/qdg/112. Disponível em: https://collane-editoriali.ingv.it/index.php/qdg/article/view/91. Acesso em: 21 oct. 2026.