Using Bracketed Parses to evaluate a Grammar Checking Application. - Richard H. Wojcik; Philip Harrison; John Bremer (ACL, 1993)

Knowledge-Driven Text Interpretation and Question-Answering: Some Current Activities at Boeing Math and Computing Technology. - Peter Clark; Philip Harrison; Thomas Jenkins; John A. Thompson; Richard H. Wojcik (New Directions in Question Answering, 2003)

Acquiring and Using World Knowledge Using a Restricted Subset of English. - Peter Clark; Philip Harrison; Thomas Jenkins; John A. Thompson; Richard H. Wojcik (FLAIRS, 2005)