“…4 PB is the object of several articles published in English, particularly the Porto Alegre experience. See, among others,Navarro (1997),Abers (1998),Santos (1998),Abers (2000),Nylen (2000a, b),Wampler (2000),Biocchi (2001),Fung and Wright (2001),Souza (2001).…”