KRISTENSEN, P.; MEJLBO, L.; POULSEN, E. Tempered Distributions in Infinitely Many Dimensions II, Displacement Operators. Mathematica Scandinavica, Berkeley, CA, United States, v. 14, p. 129–150, 1964. DOI: 10.7146/math.scand.a-10713. Disponível em: https://journals.msp.org/mscand/article/view/2591. Acesso em: 25 jul. 2026.