1. p-Mitotic sets;Ambos-Spies,1984
2. Polynomial time degrees of NP-sets;Ambos-Spies,1987
3. p-Generic sets;Ambos-Spies,1984
4. Relativizations of the P=? NP question;Baker;SIAM J. Comput.,1975
5. Separating, strongly separating and collapsing relativized complexity classes;Balcazar,1984