Measurement of the cosmic-ray energy spectrum above 2.5 × 10 18 eV using the Pierre Auger Observatory - Aab, A.; Armand, Johnnier Pérez; Carvalho Junior, Washington Rodrigues de; Santos, Edivaldo Moura; Arbeletche, Luan Bonneau; Peixoto, Carlos Jose Todero; Catalani, Fernando; Souza, Vitor de; Lang, Rodrigo Guedes; Martínez-Huerta, Humberto (Physical Review D, 2020)