L. Flek. Proceedings of the 58th Annual Meeting of the Association for Computational Linguistics, page 7828--7838. Online, Association for Computational Linguistics, (July 2020)
D. Elson, N. Dames, and K. McKeown. Proceedings of the 48th Annual Meeting of the Association for Computational Linguistics, page 138–147. Association for Computational Linguistics, The Association for Computer Linguistics, (2010)