Closure Properties of Bulgarian Clinical Text Irina Temnikova author Ivelina Nikolova author William A Baumgartner author Galia Angelova author K Bretonnel Cohen author 2013-09 text Proceedings of the International Conference Recent Advances in Natural Language Processing RANLP 2013 Ruslan Mitkov editor Galia Angelova editor Kalina Bontcheva editor INCOMA Ltd. Shoumen, BULGARIA Hissar, Bulgaria conference publication temnikova-etal-2013-closure https://aclanthology.org/R13-1087/ 2013-09 667 675