@inproceedings{inproceedings, title  = {{Compacting the Penn Treebank Grammar}},

 url = {{}},

 year = {{1999}},

 month = {{1}},

 author = {{Krotov A and Hepple M and Gaizauskas RJ and Wilks Y}},

 volume = {{cs.CL/9902001}},

 journal = {{CoRR}},

 note = {{Accessed on 2024/12/22}}}