FORELLI, Frank. The Theorems of F. and M. Riesz for Circular Sets. Mathematica Scandinavica, Berkeley, CA, United States, v. 33, p. 145–152, 1973. DOI: 10.7146/math.scand.a-11480. Disponível em: https://journals.msp.org/mscand/article/view/2184. Acesso em: 25 jul. 2026.