STROMBERG, K. A Note on the Convolution of Regular Measures. MATHEMATICA SCANDINAVICA, [S. l.], v. 7, p. 347–352, 1959. DOI: 10.7146/math.scand.a-10580. Disponível em: https://www.mscand.dk/article/view/10580. Acesso em: 3 may. 2024.