@inproceedings{AKL21,
  author    = {B. {Abu Radi} and O. Kupferman and O. Leshkowitz},
  title     = {A Hierarchy of Nondeterminism},
  booktitle =  mfcs21,
  series    = {LIPIcs},
   volume    = {202},
  pages     = {85:1-85:21},
  year      = {2021}
  }