1. 1. M. M. Arslanov, Structural properties of the degrees below0’, Dokl. Akad. Nauk. SSSR, (new series) 283 (2) (1985), 270-273.
2. The strong anticupping property for recursively enumerable degrees;Cooper, S. B.;J. Symbolic Logic,1989
3. A jump class of noncappable degrees;Cooper, S. B.;J. Symbolic Logic,1989
4. Complementing below recursively enumerable degrees;Cooper, S. Barry;Ann. Pure Appl. Logic,1987
5. Weak density and cupping in the d-r.e. degrees;Cooper, S. Barry;Israel J. Math.,1989