<hi xmlns="http://www.tei-c.org/ns/1.0" rend="bold">Davis, Randall, Shrobe, Howard, und Szolovits, Peter. </hi>1993. "What is a knowledge representation?", <hi xmlns="http://www.tei-c.org/ns/1.0" rend="italic">AI magazine</hi> 14 (1): 17-17.