Ogden's lemma, multiple context-free grammars, and the control language hierarchy

Makoto Kanazawa. Ogden's lemma, multiple context-free grammars, and the control language hierarchy. Inf. Comput., 269, 2019. [doi]

@article{Kanazawa19-0,
  title = {Ogden's lemma, multiple context-free grammars, and the control language hierarchy},
  author = {Makoto Kanazawa},
  year = {2019},
  doi = {10.1016/j.ic.2019.104449},
  url = {https://doi.org/10.1016/j.ic.2019.104449},
  researchr = {https://researchr.org/publication/Kanazawa19-0},
  cites = {0},
  citedby = {0},
  journal = {Inf. Comput.},
  volume = {269},
}