@Inproceedings{EPTCS346.19,
  author    = {Kupke, Clemens and Marti, Johannes  and Venema, Yde },
  year      = {2021},
  title     = {On the size of disjunctive formulas in the $\mu$-calculus},
  editor    = {Ganty, Pierre and Bresolin, Davide},
  booktitle = {{\rm Proceedings 12th International Symposium on}
               Games, Automata, Logics, and Formal Verification,
               {\rm Padua, Italy, 20-22 September 2021}},
  series    = {Electronic Proceedings in Theoretical Computer Science},
  volume    = {346},
  publisher = {Open Publishing Association},
  pages     = {291-307},
  doi       = {10.4204/EPTCS.346.19},
}