1. Limitations of the upward separation technique (preliminary version);Allender,1989
2. Structural Complexity I;Balcázar,1988
3. Talley languages and complexity classes;Book;Inform. and Control,1974
4. Relativizing time, space, and time-space;Book;SIAM J. Comput,1982
5. On the relativization of deterministic and nondeterministic complexity classes;Dekhtyar,1976