Unprovably intractable languages

Kenneth W. Regan. Unprovably intractable languages. In Proceedings of the Second Annual Conference on Structure in Complexity Theory, Cornell University, Ithaca, New York, USA, June 16-19, 1987. pages 69-80, IEEE Computer Society, 1987.

@inproceedings{Regan87,
  title = {Unprovably intractable languages},
  author = {Kenneth W. Regan},
  year = {1987},
  researchr = {https://researchr.org/publication/Regan87},
  cites = {0},
  citedby = {0},
  pages = {69-80},
  booktitle = {Proceedings of the Second Annual Conference on Structure in Complexity Theory, Cornell University, Ithaca, New York, USA, June 16-19, 1987},
  publisher = {IEEE Computer Society},
}