An Empirical Investigation of Proposals in Collaborative Dialogues Barbara Di Eugenio author Pamela W Jordan author Johanna D Moore author Richmond H Thomason author 1998 text COLING 1998 Volume 1: The 17th International Conference on Computational Linguistics conference publication di-eugenio-etal-1998-empirical https://aclanthology.org/C98-1051/ 1998