EDWARDS, D. A. Vector-valued measure and bounded Variation in Hilbert space. Mathematica Scandinavica, Berkeley, CA, United States, v. 3, p. 90–96, 1955. DOI: 10.7146/math.scand.a-10428. Disponível em: https://journals.msp.org/mscand/article/view/2895. Acesso em: 8 sep. 2026.