Measurement of the cosmic-ray energy spectrum above 2.5×1018 eV using the Pierre Auger Observatory - Aab A; Abreu P; Aglietta M; Albury JM; Allekotte I; Almela A; Alvarez Castillo J; Alvarez-Muñiz J; Alves Batista R; Anastasi GA; Anchordoqui L; Andrada B; et al. (PHYSICAL REVIEW D, 2020)