Black holes by gravitational decoupling J. Ovalle, R. Casadio, R. da Rocha, A. Sotomayor and Z. Stuchlik Eur. Phys. J. C, 78 11 (2018) 960 Published online: 21 November 2018 DOI: 10.1140/epjc/s10052-018-6450-4