Building a Large Annotated Corpus of Learner English: The NUS Corpus of Learner English. - Daniel Dahlmeier; Hwee Tou Ng; Siew Mei Wu (BEA@NAACL-HLT, 2013)

The CoNLL-2013 Shared Task on Grammatical Error Correction. - Hwee Tou Ng; Siew Mei Wu; Yuanbin Wu; Christian Hadiwinoto; Joel R. Tetreault (CoNLL Shared Task, 2013)

The CoNLL-2014 Shared Task on Grammatical Error Correction. - Hwee Tou Ng; Siew Mei Wu; Ted Briscoe; Christian Hadiwinoto; Raymond Hendy Susanto; Christopher Bryant 001 (CoNLL Shared Task, 2014)