FORELLI, F. The Theorems of F. and M. Riesz for Circular Sets. MATHEMATICA SCANDINAVICA, [S. l.], v. 33, p. 145–152, 1973. DOI: 10.7146/math.scand.a-11480. Disponível em: https://www.mscand.dk/article/view/11480. Acesso em: 5 may. 2024.