1. Ph.D. Thesis;Appelbaum,1969
2. Decidable subspaces and recursively enumerable subspaces;Ash;J. Symbolic Logic,1984
3. Intersections of algebraically closed fields;Ash;Ann. Pure Appl. Logic,1986
4. Recursion theory and abstract dependence;Baldwin,1982
5. Constructive order types I;Crossley,1965