WESTON, J. D. The decomposition of a continuous linear functional into non-negative components. MATHEMATICA SCANDINAVICA, [S. l.], v. 5, p. 54–56, 1957. DOI: 10.7146/math.scand.a-10489. Disponível em: https://www.mscand.dk/article/view/10489. Acesso em: 6 may. 2024.