1. The complexity of sparse sets in P;Allender,1986
2. Combinatorial problems over power sets;Ausicllo;Calcolo,1980
3. Relative complexity of evaluating and constructing the optimum of maximization problems;Crescenzi;Proc. 26th Annual Allerton Conf. on Communication, Control and Computing,1988
4. The complexity of optimization functions;Gasarch,1986
5. The complexity of optimization problems;Krentel;Proc. 18th ACM Symp. on Theory of Computing,1986