GUZMÁN CHÁVEZ, A. Innovation on nanomaterials across countries in a triple helix framework: The case oxide of hafnium. Panorama Económico, [S. l.], v. 7, n. 14, p. 29–57, 2025. DOI: 10.29201/peipn.v7i14.331. Disponível em: https://www.revistapanoramaeconomico.mx/index.php/PE/article/view/331. Acesso em: 19 nov. 2025.