SKOLEM, T. Remarks on the Connection Between Intuitionistic Logic and a Certain Class of Lattices. MATHEMATICA SCANDINAVICA, [S. l.], v. 6, p. 231–236, 1958. DOI: 10.7146/math.scand.a-10548. Disponível em: https://www.mscand.dk/article/view/10548. Acesso em: 6 may. 2024.