The GREC Main Subject Reference Generation Challenge 2009: Overview and Evaluation Results Anja Belz author Eric Kow author Jette Viethen author Albert Gatt author 2009-08 text Proceedings of the 2009 Workshop on Language Generation and Summarisation (UCNLG+Sum 2009) Anja Belz editor Roger Evans editor Sebastian Varges editor Association for Computational Linguistics Suntec, Singapore conference publication belz-etal-2009-grec https://aclanthology.org/W09-2816/ 2009-08 79 87