@InProceedings{childs-cassel:1998:TIPSTER98, author = {Lois C. Childs and David Cassel}, title = {EXTRACTING AND NORMALIZING TEMPORAL EXPRESSIONS}, booktitle = {Proceedings of the TIPSTER Text Program: Phase III}, month = {October}, year = {1998}, address = {Baltimore, Maryland, USA}, publisher = {Association for Computational Linguistics}, pages = {51--56}, url = {http://www.aclweb.org/anthology/X98-1011}, doi = {10.3115/1119089.1119104} }