PhD in Social Sciences, National Council for Scientific and Technological Research (CONICET), Faculty of Social Sciences, University of Buenos Aires (UBA) and National Water Institute (INA), Buenos Aires. Thesis title: "The re-statization of water and sanitation services in Argentina. Towards a new progressive public model? The cases of AySA and ASSA". Supervisor: Prof. José Esteban Castro and Ing. Raúl Antonio Lopardo.