Cut-free Double Sequent Calculus for S5

Andrzej Indrzejczak. Cut-free Double Sequent Calculus for S5. Logic Journal of the IGPL, 6(3):505-516, 1998. [doi]

@article{Indrzejczak98,
  title = {Cut-free Double Sequent Calculus for S5},
  author = {Andrzej Indrzejczak},
  year = {1998},
  url = {http://www3.oup.co.uk/igpl/Volume_06/Issue_03/#indrzejczak},
  researchr = {https://researchr.org/publication/Indrzejczak98},
  cites = {0},
  citedby = {0},
  journal = {Logic Journal of the IGPL},
  volume = {6},
  number = {3},
  pages = {505-516},
}