1. Department of Physical and Chemical Sciences University of L'Aquila L'Aquila Italy
2. Consorzio Area di Ricerca in Astrogeofisica University of L'Aquila L'Aquila Italy
3. Institute for Complex Systems ISC‐CNR National Research Council Rome Italy
4. DISIM Universitá degli Studi dell'Aquila L'Aquila Italy
5. Istituto Nazionale di Alta Matematica Rome Italy
6. Istituto Nazionale di Geofisica e Vulcanoligia Rome Italy
7. SpacEarth Technology Rome Italy
8. School of Mathematics Georgia Institute of Technology Atlanta GA USA
9. Laboratorio de Ionósfera Departamento de Física, FACET, Universidad Nacional de Tucumán Tucumán Argentina
10. CIASUR, Facultad Regional Tucumán Universidad Tecnológica Nacional Tucumán Argentina
11. Consejo Nacional de Investigaciones Científicas y Técnicas Buenos Aires Argentina