HOFFMANN-JORGENSEN, J. Existence of Conditional Probabilities. MATHEMATICA SCANDINAVICA, [S. l.], v. 28, p. 257–264, 1971. DOI: 10.7146/math.scand.a-11023. Disponível em: https://tidsskrift.dk/math/article/view/11023. Acesso em: 14 aug. 2026.