@InProceedings{gao-vogel:2011:ACL-HLT2011, author = {Gao, Qin and Vogel, Stephan}, title = {Corpus Expansion for Statistical Machine Translation with Semantic Role Label Substitution Rules}, booktitle = {Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies}, month = {June}, year = {2011}, address = {Portland, Oregon, USA}, publisher = {Association for Computational Linguistics}, pages = {294--298}, url = {http://www.aclweb.org/anthology/P11-2051} }