NYAGAHAKWA, Venuste; HAGUMA, Gratien. Non-Lebesgue measurability of finite unions of Vitali selectors related to different groups. Mathematica Scandinavica, Berkeley, CA, United States, v. 127, n. 3, 2021. DOI: 10.7146/math.scand.a-128969. Disponível em: https://journals.msp.org/mscand/article/view/134. Acesso em: 24 jul. 2026.