Compendium of Complete Problems in Second Level and Higher (Schaefer and Umans)
Relevant Papers:
- S. R. Mahaney. Sparse complete sets for NP: Solution of a conjecture by Berman and Hartmanis. Journal of Computer and System Sciences 25:130-143. 1982.
- M. Ogiwara and O. Watanabe. On polynomial time bounded truth-table reducibility of NP sets to sparse sets. SIAM Journal on Computing volume 20, pp.471–483. 1991.
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