FIREY, W. J. $p$-Means of Convex Bodies. MATHEMATICA SCANDINAVICA, [S. l.], v. 10, p. 17–24, 1962. DOI: 10.7146/math.scand.a-10510. Disponível em: https://www.mscand.dk/article/view/10510. Acesso em: 6 may. 2024.