BIRKELAND, B. A Cauchy Problem fo Analytic Functionals. MATHEMATICA SCANDINAVICA, [S. l.], v. 33, p. 130–138, 1973. DOI: 10.7146/math.scand.a-11478. Disponível em: https://www.mscand.dk/article/view/11478. Acesso em: 24 nov. 2024.