How to contract an essentially 6-connected graph to a 5-connected graph

Matthias Kriesell. How to contract an essentially 6-connected graph to a 5-connected graph. Discrete Mathematics, 307(3-5):494-510, 2007. [doi]

@article{Kriesell07,
  title = {How to contract an essentially 6-connected graph to a 5-connected graph},
  author = {Matthias Kriesell},
  year = {2007},
  doi = {10.1016/j.disc.2005.09.040},
  url = {http://dx.doi.org/10.1016/j.disc.2005.09.040},
  tags = {contracts, graph-rewriting, rewriting},
  researchr = {https://researchr.org/publication/Kriesell07},
  cites = {0},
  citedby = {0},
  journal = {Discrete Mathematics},
  volume = {307},
  number = {3-5},
  pages = {494-510},
}