W
[Wag88] Klaus W. Wagner. On Restricting the Access to an NP-Oracle. In ICALP'88, Lecture Notes in Computer Science 317, pages 682-696. Springer-Verlag, July 1988. 
@inproceedings{icalp1988-Wag,
  author =              {Wagner, Klaus W.},
  title =               {On Restricting the Access to an NP-Oracle},
  editor =              {Lepist{\"o}, Timo and Salomaa, Arto},
  booktitle =           {{P}roceedings of the 15th {I}nternational
                         {C}olloquium on {A}utomata, {L}anguages and
                         {P}rogramming ({ICALP}'88)},
  acronym =             {{ICALP}'88},
  publisher =           {Springer-Verlag},
  series =              {Lecture Notes in Computer Science},
  volume =              {317},
  pages =               {682-696},
  year =                {1988},
  month =               jul,
}
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