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[Nie02] Frank Nießner. Non-deterministic tree automata. In Erich Grädel, Wolfgang Thomas, and Thomas Wilke (eds.), Automata, Logics, and Infinite Games, Lecture Notes in Computer Science 2500, pages 227-232. Springer-Verlag, 2002. 
@incollection{lncs2500-niessner,
  author =              {Nie{\ss}ner, Frank},
  title =               {Non-deterministic tree automata},
  editor =              {Gr{\"a}del, Erich and Thomas, Wolfgang and Wilke,
                         Thomas},
  booktitle =           {Automata, Logics, and Infinite Games},
  publisher =           {Springer-Verlag},
  series =              {Lecture Notes in Computer Science},
  volume =              {2500},
  pages =               {227-232},
  chapter =             {8},
  year =                {2002},
}
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