EDWARDS, D. A. Vector-valued measure and bounded Variation in Hilbert space. MATHEMATICA SCANDINAVICA, [S. l.], v. 3, p. 90–96, 1955. DOI: 10.7146/math.scand.a-10428. Disponível em: https://www.mscand.dk/article/view/10428. Acesso em: 5 may. 2024.