TY  - JOUR
AU  - Ellen Voorhees
C2  - Summer School on Information Extraction
DA  - 1999-07-13
LA  - en
PB  - Summer School on Information Extraction
PY  - 1999
TI  - Natural Language Processing and Information Retrieval
UR  - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=151418
ER  -