Gentzen's consistency proof without heightlines

Annika Siders. Gentzen's consistency proof without heightlines. Arch. Math. Log., 52(3-4):449-468, 2013. [doi]

@article{Siders13,
  title = {Gentzen's consistency proof without heightlines},
  author = {Annika Siders},
  year = {2013},
  doi = {10.1007/s00153-013-0324-0},
  url = {http://dx.doi.org/10.1007/s00153-013-0324-0},
  researchr = {https://researchr.org/publication/Siders13},
  cites = {0},
  citedby = {0},
  journal = {Arch. Math. Log.},
  volume = {52},
  number = {3-4},
  pages = {449-468},
}