Online Information Retrieval for Language Learning Maria Chinkina author Madeeswaran Kannan author Detmar Meurers author 2016-08 text Proceedings of ACL-2016 System Demonstrations Sameer Pradhan editor Marianna Apidianaki editor Association for Computational Linguistics Berlin, Germany conference publication chinkina-etal-2016-online 10.18653/v1/P16-4002 https://aclanthology.org/P16-4002/ 2016-08 7 12