FIREY, Wm. J. Pythagorean Inequalities for Convex Bodies. Mathematica Scandinavica, Berkeley, CA, United States, v. 8, p. 168–170, 1960. DOI: 10.7146/math.scand.a-10605. Disponível em: https://journals.msp.org/mscand/article/view/2737. Acesso em: 25 jul. 2026.