DU PLESSIS, Andrew; VOSEGAARD, Henrik. Characterisation of strong smooth stability. Mathematica Scandinavica, Berkeley, CA, United States, v. 88, n. 2, p. 193–228, 2001. DOI: 10.7146/math.scand.a-14323. Disponível em: https://journals.msp.org/mscand/article/view/882. Acesso em: 24 jul. 2026.