M
[MS87] David E. Muller and Paul E. Schupp. Alternating Automata on Infinite Trees. Theoretical Computer Science 54(2-3):267-276. Elsevier, October 1987. 
@article{tcs54(2-3)-MS,
  author =              {Muller, David E. and Schupp, Paul E.},
  title =               {Alternating Automata on Infinite Trees},
  publisher =           {Elsevier},
  journal =             {Theoretical Computer Science},
  volume =              {54},
  number =              {2-3},
  pages =               {267-276},
  year =                {1987},
  month =               oct,
}
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