@inproceedings{dorre-1996-parsing, title = "Parsing with Semidirectional {L}ambek Grammar is {NP}-Complete", author = {D{\"o}rre, Jochen}, booktitle = "34th Annual Meeting of the Association for Computational Linguistics", month = jun, year = "1996", address = "Santa Cruz, California, USA", publisher = "Association for Computational Linguistics", url = "https://preview.aclanthology.org/fix-sig-urls/P96-1013/", doi = "10.3115/981863.981876", pages = "95--100" }