Ramos-Buades, A, Meent, M V D, Pfeiffer, H P, Rueter, H R, Scheel, M A, Boyle, M & Kidder, L E 2022, ' Eccentric binary black holes : Comparing numerical relativity and small mass-ratio perturbation theory ', Physical Review D, vol. 106, no. 12, 124040 . https://doi.org/10.1103/PhysRevD.106.124040 Physical Review D