Compton-thick AGN in the CDFN I. Georgantopoulos NOA A. Akylas NOA A. Georgakakis NOA M. Rovilos MPE M. Rowan-Robinson Imperial College. - ppt download
Normal galaxies: X-ray luminosity function & its evolution Panayiotis Tzanavaris (NOA) Ioannis Georgantopoulos (NOA) Antonis Georgakakis (ICL) XSurverys ppt download
Georgantopoulos Ioannis - IAASARS
50+ "Georgantopoulos" profiles | LinkedIn
Γεωργαντόπουλος στο sportin.gr: "Μοναδικό το συναίσθημα του τερματισμού στο Καλλιμάρμαρο" | SPORTIN
Hot and Energetic Universe – Planetarium On The Go
Ioannis Georgantopoulos - Director of Research - National Observatory of Athens | LinkedIn