Frakes, William B.Terry, Carol2013-06-192013-06-191994http://hdl.handle.net/10919/19900This paper is no longer available. It has been replaced by TR-95-07.application/postscriptenIn CopyrightTechnical reportTR-94-27http://eprints.cs.vt.edu/archive/00000409/01/NotOnline.html