Direct measurement of the muonic content of extensive air showers between 2 × 10^17 and 2 × 10^18 eV at the Pierre Auger Observatory - Aab, A.; Arbeletche, Luan Bonneau; Catalani, Fernando; Souza, Vitor de; Lang, Rodrigo Guedes; Martínez-Huerta, Humberto; Armand, Johnnier Pérez; Carvalho Junior, Washington Rodrigues de; Santos, Edivaldo Moura; Peixoto, Carlos Jose Todero (European Physical Journal C, 2020)