Quantitative Data on Referring Expressions in Biomedical Abstracts Michael Poprat author Udo Hahn author 2007-06 text Biological, translational, and clinical language processing K Bretonnel Cohen editor Dina Demner-Fushman editor Carol Friedman editor Lynette Hirschman editor John Pestian editor Association for Computational Linguistics Prague, Czech Republic conference publication poprat-hahn-2007-quantitative https://aclanthology.org/W07-1028/ 2007-06 193 194