LAU, A. T. -m.; LOY, R. J. Amenability of Convolution Algebras. Mathematica Scandinavica, Berkeley, CA, United States, v. 79, p. 283–296, 1996. DOI: 10.7146/math.scand.a-12607. Disponível em: https://journals.msp.org/mscand/article/view/1065. Acesso em: 25 jul. 2026.