Feigenbaum, Edward A., Peter E. Friedland, Bruce B. Johnson, H. Penny Nii, Herbert Schorr, Howard Shrobe, and Robert S. Engelmore. 1994. “Knowledge-Based Systems Research and Applications in Japan, 1992”. AI Magazine 15 (2):29. https://doi.org/10.1609/aimag.v15i2.1089.