FRENNEMO, L. Tauberian Problems for the $n$-Dimensional Laplace Transform. MATHEMATICA SCANDINAVICA, [S. l.], v. 19, p. 41–53, 1966. DOI: 10.7146/math.scand.a-10794. Disponível em: https://www.mscand.dk/article/view/10794. Acesso em: 7 may. 2024.