SIERRA, J. . La cuarta hélice y la financiacion de la innovacion. Journal of Economics, Finance and Administrative Science, [S. l.], v. 23, n. 45, p. 128–137, 2018. Disponível em: https://revistas.esan.edu.pe/index.php/jefas/article/view/100. Acesso em: 20 apr. 2024.