Massaro, E.E.MassaroMASELLI, AlessandroAlessandroMASELLILeto, C.C.LetoMarchegiani, P.P.MarchegianiPERRI, MatteoMatteoPERRIGiommi, P.P.GiommiPIRANOMONTE, SilviaSilviaPIRANOMONTE2020-07-072020-07-0720150004-640Xhttp://hdl.handle.net/20.500.12386/26376The 5th edition of the Roma-BZCAT Multifrequency Catalogue of Blazars is available in a printed version and online at the ASDC website (http://www.asdc.asi.it/bzcat); it is also in the NED database. It presents several relevant changes with respect to the past editions which are briefly described in this paper.STAMPAenArticle10.1007/s10509-015-2254-22-s2.0-84928323406000354392400019https://link.springer.com/article/10.1007/s10509-015-2254-22015Ap&SS.357...75MFIS/05 - ASTRONOMIA E ASTROFISICA