The Half-Levels of the FO2 Alternation Hierarchy. Fleischer, L., Kufleitner, M., & Lauser, A. Theory Comput. Syst., 61(2):352-370, 2017.
The Half-Levels of the FO2 Alternation Hierarchy. [link]Link  The Half-Levels of the FO2 Alternation Hierarchy. [link]Paper  bibtex   
@article{journals/mst/FleischerKL17,
  added-at = {2017-07-13T00:00:00.000+0200},
  author = {Fleischer, Lukas and Kufleitner, Manfred and Lauser, Alexander},
  biburl = {http://www.bibsonomy.org/bibtex/2b9419edb9c2b956b7ba50f6fb0ac248d/dblp},
  ee = {https://doi.org/10.1007/s00224-016-9712-2},
  interhash = {41b74a75c54f11cbbf7c28b192b663f8},
  intrahash = {b9419edb9c2b956b7ba50f6fb0ac248d},
  journal = {Theory Comput. Syst.},
  keywords = {dblp},
  number = 2,
  pages = {352-370},
  timestamp = {2017-07-14T11:36:06.000+0200},
  title = {The Half-Levels of the FO2 Alternation Hierarchy.},
  url = {http://dblp.uni-trier.de/db/journals/mst/mst61.html#FleischerKL17},
  volume = 61,
  year = 2017
}

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