Description of Lockheed Martin's NLToolset as Applied to MUC-7 (AATM7). - Deborah Brady; Lois C. Childs; David Cassel; Bob Magee; Norris H. Heintzelman; Carl Weir (MUC, 1998)

Extracting and Normalizing Temporal Expressions. - Lois C. Childs; David Cassel (TIPSTER, 1998)