FIREY, Wm. J. Pythagorean Inequalities for Convex Bodies. MATHEMATICA SCANDINAVICA, [S. l.], v. 8, p. 168–170, 1960. DOI: 10.7146/math.scand.a-10605. Disponível em: https://tidsskrift.dk/math/article/view/10605. Acesso em: 14 aug. 2026.