Prototype muon detectors for the AMIGA component of the Pierre Auger Observatory - Aab, A.; Albuquerque, Ivone Freire da Mota e; Souza, Vitor de; Anjos, R. C.; Gouffon, Philippe; Prado, R. R.; Santos, Edivaldo Moura; Peixoto, Carlos Jose Todero (Journal of Instrumentation, 2016)