AWAN, A. G. .; KHAN, R. E. A. . Th e Enigma of US Productivity Slowdown: A Theoretical Analysis. American Journal of Trade and Policy, [S. l.], v. 1, n. 1, p. 7–15, 2014. DOI: 10.18034/ajtp.v1i1.356. Disponível em: https://abc.us.org/ojs/index.php/ajtp/article/view/356. Acesso em: 3 jul. 2024.