@article{conditionalindependencestructuresoverfou,
  title = {Conditional independence structures over four discrete random variables revisited: conditional Ingleton inequalities},
  author = {Milan Studeny},
  year = {2020},
  eprint = {2012.04092},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2012.04092v3},
}