The Urban Seismic Observatory of Catania (Italy): A Real-Time Seismic Monitoring at Urban Scale oleh Domenico Patanè, Giuseppina Tusa, William Yang, Antonio Astuti, Antonio Colino, Antonio Costanza, Giuseppe D’Anna, Sergio Di Prima, Gioacchino Fertitta, Salvatore Mangiagli, Claudio Martino, Orazio Torrisi