S
[Sto76] Larry J. Stockmeyer. The Polynomial-Time Hierarchy. Theoretical Computer Science 3(1):1-22. Elsevier, 1976. 
@article{tcs3(1)-Sto,
  author =              {Stockmeyer, Larry J.},
  title =               {The Polynomial-Time Hierarchy},
  publisher =           {Elsevier},
  journal =             {Theoretical Computer Science},
  volume =              {3},
  number =              {1},
  pages =               {1-22},
  year =                {1976},
}
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