R & D, structural change and productivity: the role of high and medium-high technology industries. Economia Aplicada, [S. l.], v. 13, n. 4, p. 399–424, 2009. DOI: 10.1590/S1413-80502009000400003. Disponível em: https://www.revistas.usp.br/ecoa/article/view/1022.. Acesso em: 28 abr. 2024.