@inproceedings{inproceedings, title = {{Normal Form Theorem Proving for the Lambek Calculus.}}, url = {{https://aclanthology.org/volumes/C90-1/ }}, year = {{1990}}, month = {{1}}, author = {{Hepple M}}, journal = {{COLING}}, pages = {{173-178}}, note = {{Accessed on 2025/11/18}}}