Lenat, Douglas, Michael Witbrock, David Baxter, Eugene Blackstone, Chris Deaton, Dave Schneider, Jerry Scott, and Blake Shepard. “Harnessing Cyc to Answer Clinical Researchers’ Ad Hoc Queries”. AI Magazine 31, no. 3 (July 28, 2010): 13-32. Accessed December 16, 2019. https://www.aaai.org/ojs/index.php/aimagazine/article/view/2299.