KRISTENSEN, P.; MEJLBO, L.; POULSEN, E. Tempered Distributions in Infinitely Many Dimensions II, Displacement Operators. MATHEMATICA SCANDINAVICA, [S. l.], v. 14, p. 129–150, 1964. DOI: 10.7146/math.scand.a-10713. Disponível em: https://tidsskrift.dk/math/article/view/10713. Acesso em: 14 aug. 2026.