1. On uniformity within NC1;Barrington;J. Comput. System Sci.,1990
2. Constant depth reducibility;Chandra;SIAM J. Comput.,1984
3. A taxonomy of problems with fast parallel algorithms;Cook;Inform. and Control,1985
4. Reduction to NP-complete problems by interpretations;Dahlhaus,1984
5. Generalized first-order spectra and polynomial-time recognizable sets;Fagin,1974