PLEIJEL, A. Beiträge zur Theorie der Laplace-Stieltjes -Transformationen. MATHEMATICA SCANDINAVICA, [S. l.], v. 4, p. 147–152, 1956. DOI: 10.7146/math.scand.a-10464. Disponível em: https://www.mscand.dk/article/view/10464. Acesso em: 22 nov. 2024.