"Constraints on Decaying Dark Matter from the Isotropic Gamma-Ray Background", 36th International Cosmic Ray Conference (ICRC2019), held July 24th-August 1st, 2019 in Madison, WI, U.S.A. Online at https://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=358, id.511 (Jul 2019) C. Blanco