%0 Journal Article %T Optical Counterparts of Undetermined Type e£¿£¿£¿-Ray Active Galactic Nuclei with Blazar-Like Spectral Energy Distributions %A David Salvetti %A Fermi-LAT collaboration %A Giovanni La Mura %A Graziano Chiaro %A Marco Berton %A Piero Rafanelli %A Stefano Ciroi %A Valentina Cracco %J - %D 2015 %U https://www.ias.ac.in/describe/article/joaa/036/04/0447-0455