FENSTAD, Jens Erik. On the Consistency of the Axiom of Comprehension in the Lukasiewicz Infinite Valued Logic. MATHEMATICA SCANDINAVICA, [S. l.], v. 14, p. 65–74, 1964. DOI: 10.7146/math.scand.a-10706. Disponível em: https://tidsskrift.dk/math/article/view/10706. Acesso em: 14 aug. 2026.