Paul R. Cohen Robert Schrag Eric K. Jones Adam Pease Albert Lin Barbara Starr David Gunning Murray Burke The DARPA High-Performance Knowledge Bases Project. 25-49 1998 19 AI Magazine 4 db/journals/aim/aim19.html#CohenSJPLSGB98 http://www.aaai.org/ojs/index.php/aimagazine/article/view/1423