Dielectric behavior of a quaternary composite (RE, BT, MnO2, CaO) in the band (DC–2 GHz)Mounir Bouchaour, Juan Pablo Martínez Jiménez, Nacerdine Bouzit and Nacerdine BouroubaEur. Phys. J. Appl. Phys., 84 1 (2018) 10201DOI: https://doi.org/10.1051/epjap/2018180056