S
[SU02] Marcus Schaefer and Christopher Umans. Completeness in the Polynomial-Time hierarchy: A Compendium. SIGACT News 33(3):32-49. ACM Press, September 2002. 
@article{sigact-news-33(3)-SU,
  author =              {Schaefer, Marcus and Umans, Christopher},
  title =               {Completeness in the Polynomial-Time hierarchy: A
                         Compendium},
  publisher =           {ACM Press},
  journal =             {SIGACT News},
  volume =              {33},
  number =              {3},
  pages =               {32-49},
  year =                {2002},
  month =               sep,
}
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