GRILICHES, Z. R & D and productivity: the unfinished business. Estudios de Economía, [S. l.], v. 25, n. 2, p. pp. 145–160, 2016. Disponível em: https://revistas.uchile.cl/index.php/EDE/article/view/41027. Acesso em: 22 maio. 2024.