SAEKI, Sadahiro; STROMBERG, Karl. Measurable subgroups and nonmeasurable characters. Mathematica Scandinavica, Berkeley, CA, United States, v. 57, p. 359–374, 1985. DOI: 10.7146/math.scand.a-12122. Disponível em: https://journals.msp.org/mscand/article/view/1543. Acesso em: 25 jul. 2026.