Distinguishing Brans–Dicke–Kerr type naked singularities and black holes with their thin disk electromagnetic radiation propertiesShahab Shahidi, Tiberiu Harko and Zoltán KovácsEur. Phys. J. C, 80 2 (2020) 162DOI: https://doi.org/10.1140/epjc/s10052-020-7736-x