@InProceedings{niu-wang-wu:2009:ACLIJCNLP, author = {Niu, Zheng-Yu and Wang, Haifeng and Wu, Hua}, title = {Exploiting Heterogeneous Treebanks for Parsing}, booktitle = {Proceedings of the Joint Conference of the 47th Annual Meeting of the ACL and the 4th International Joint Conference on Natural Language Processing of the AFNLP}, month = {August}, year = {2009}, address = {Suntec, Singapore}, publisher = {Association for Computational Linguistics}, pages = {46--54}, url = {http://www.aclweb.org/anthology/P/P09/P09-1006} }