HOFFMANN-JORGENSEN, J. Weak Compactness and Tightness of Subsets of $M(X)$. MATHEMATICA SCANDINAVICA, [S. l.], v. 31, p. 127–150, 1972. DOI: 10.7146/math.scand.a-11420. Disponível em: https://tidsskrift.dk/math/article/view/11420. Acesso em: 14 aug. 2026.