Carbon taxation and firm behavior in emerging economies: evidence from South Africa / Johannes Gallé (Potsdam Institute for Climate Impact Research), Rodrigo Oliveira (UNU-WIDER), Daniel Overbeck (National University of Singapore), Nadine Riedel (University of Münster), Edson Severnini (Boston College, Nova SBE, NBER and IZA) ; IZA Institute of Labor Economics