@inproceedings{wan-2009-co, title = "Co-Training for Cross-Lingual Sentiment Classification", author = "Wan, Xiaojun", editor = "Su, Keh-Yih and Su, Jian and Wiebe, Janyce and Li, Haizhou", 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 = aug, year = "2009", address = "Suntec, Singapore", publisher = "Association for Computational Linguistics", url = "https://aclanthology.org/P09-1027/", pages = "235--243" }