Perturbative and nonperturbative quasinormal modes of 4D Einstein–Gauss–Bonnet black holes Almendra Aragón, Ramón Bécar, P. A. González and Yerko Vásquez Eur. Phys. J. C, 80 8 (2020) 773 Published online: 25 August 2020 DOI: 10.1140/epjc/s10052-020-8298-7