Automorphism Groups of Computably Enumerable Predicates E. F. Combarro OriginalPaper Pages: 285 - 294
Partial Results in Δ 3 0 -Categoricity in Linear Orderings and Boolean Algebras Ch. F. D. McCoy OriginalPaper Pages: 295 - 305
Decidability of Hierarchies of Regular Aperiodic Languages V. L. Selivanov OriginalPaper Pages: 337 - 348