Citation: P. Cholak et R. Downey, RECURSIVELY-ENUMERABLE M-DEGREES AND TT-DEGREES .3. REALIZING ALL FINITE DISTRIBUTIVE LATTICES, Journal of the London Mathematical Society, 50, 1994, pp. 440-453
Citation: R. Downey et Cg. Jockusch, EVERY LOW BOOLEAN-ALGEBRA IS ISOMORPHIC TO A RECURSIVE ONE, Proceedings of the American Mathematical Society, 122(3), 1994, pp. 871-880
Citation: P. Cholak et R. Downey, LATTICE NONEMBEDDINGS AND INTERVALS OF THE RECURSIVELY-ENUMERABLE DEGREES, Annals of pure and applied Logic, 61(3), 1993, pp. 195-221
Citation: R. Downey, EVERY RECURSIVE BOOLEAN-ALGEBRA IS ISOMORPHIC TO ONE WITH INCOMPLETE ATOMS, Annals of pure and applied Logic, 60(3), 1993, pp. 193-206