@Inproceedings{EPTCS191.11,
  author    = {Lehtinen, Karoliina},
  year      = {2015},
  title     = {Disjunctive form and the modal $\mu$ alternation hierarchy},
  editor    = {Matthes, Ralph and Mio, Matteo},
  booktitle = {{\rm Proceedings Tenth International Workshop on}
               Fixed Points in Computer Science,
               {\rm Berlin, Germany, September 11-12, 2015}},
  series    = {Electronic Proceedings in Theoretical Computer Science},
  volume    = {191},
  publisher = {Open Publishing Association},
  pages     = {117-131},
  doi       = {10.4204/EPTCS.191.11},
}