FALIVA, M.; ZOIA, M. G. Matrix polynomials and their inversion: the algebric framework of unit-root econometrics representation theorems. Statistica, [S. l.], v. 62, n. 2, p. 187–202, 2002. DOI: 10.6092/issn.1973-2201/1264. Disponível em: https://rivista-statistica.unibo.it/article/view/1264. Acesso em: 17 oct. 2021.