TY - JOUR T1 - The dynamic intensity of CO 2 emissions: empirical evidence for the 20 th century JO - Brazilian Journal of Political Economy A1 - CARNEIRO, DIEGO A1 - IRFFI, GUILHERME SN - 0101-3157 UL - 10.1590/0101-31572017v37n04a07 VL - 37 Y1 - 2017 PB - Brasil ER -