Quasinormal modes of a charged spherical black hole with scalar hair for scalar and Dirac perturbations Avijit Chowdhury and Narayan Banerjee Eur. Phys. J. C, 78 7 (2018) 594 Published online: 23 July 2018 DOI: 10.1140/epjc/s10052-018-6065-9