CARLESON, L. On infinite differential equations with constant coefficients. I. MATHEMATICA SCANDINAVICA, [S. l.], v. 1, p. 31–38, 1953. DOI: 10.7146/math.scand.a-10362. Disponível em: https://www.mscand.dk/article/view/10362. Acesso em: 27 apr. 2024.