SLOWIKOWSKI, W. On Hörmander’s Theorem about Surjections of $\mathscr{D}’$. MATHEMATICA SCANDINAVICA, [S. l.], v. 30, p. 267–280, 1972. DOI: 10.7146/math.scand.a-11083. Disponível em: https://tidsskrift.dk/math/article/view/11083. Acesso em: 14 aug. 2026.