@inproceedings{ijcai1977p126,
  title     = {A Proof-Checker for Dynamic Logic},
  author    = {Litvintchouk, Steven D. and Pratt, Vaughan R.},
  booktitle = {Proceedings of the Fifth International Joint Conference on
               Artificial Intelligence, {IJCAI-77}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Raj Reddy},
  pages     = {552--557},
  year      = {1977},
  note      = {Theorem Proving},
  url       = {https://ijcai.org/proceedings/1977/126},
}