Massive scalar field perturbations of black holes surrounded by dark matter Ramón Bécar, P. A. González, Eleftherios Papantonopoulos and Yerko Vásquez Eur. Phys. J. C, 84 3 (2024) 329 Published online: 28 March 2024 DOI: 10.1140/epjc/s10052-024-12553-8