1. Structural Complexity I;Balcázar,1989
2. Structural Complexity II;Balcázar,1990
3. Disjoint NP-pairs from propositional proof systems;Beyersdorff,2006
4. Classes of representable disjoint NP-pairs;Beyersdorff;Theoretical Computer Science,2007
5. On the existence of complete disjoint NP-pairs;Beyersdorff,2009