1. Reducibility, randomness, and intractability;Adleman,1977
2. Trading group theory for randomness;Babai,1985
3. Arthur-Merlin games: A randomized proof system and a short hierarchy of complexity classes;Babai,1986
4. Sparse sets, lowness, and highness;Balcázar;SIAM J. Comput.,1986
5. Relative to a random oracle A, PA ≠ co-NPA with probability 1;Bennett;SIAM J. Comput.,1981