Lenat, D., M. Witbrock, D. Baxter, E. Blackstone, C. Deaton, D. Schneider, J. Scott, and B. Shepard. “Harnessing Cyc to Answer Clinical Researchers’ Ad Hoc Queries”. AI Magazine, vol. 31, no. 3, July 2010, pp. 13-32, doi:10.1609/aimag.v31i3.2299.