RAMÍREZ ÁLVAREZ, A. A.; TERRAZAS SANTAMARÍA, D. Temporal evolution of the technological impact of Mexican patents: An application of the expectation-maximization algorithm. Estudios Económicos de El Colegio de México, [S. l.], v. 35, n. 1, p. 37–69, 2020. DOI: 10.24201/ee.v35i1.397. Disponível em: https://estudioseconomicos.colmex.mx/index.php/economicos/article/view/397. Acesso em: 28 mar. 2024.