Distributive Initial Segments of the Degrees of Unsolvability.Published in:Mathematical Logic Quarterly, 1968, v. 14, n. 30, p. 457, doi. 10.1002/malq.19680143002By:Lachlan, A. H.Publication type:Article
Masthead.Published in:Mathematical Logic Quarterly, 1968, v. 14, n. 30, p. fmi, doi. 10.1002/malq.19680143001Publication type:Article