Congdon, C., M. Huber, D. Kortenkamp, K. Konolige, K. Myers, A. Saffiotti, and E. Ruspini. “Carmel Versus Flakey: A Comparison of Two Winners”. AI Magazine, vol. 14, no. 1, Mar. 1993, p. 49, doi:10.1609/aimag.v14i1.1031.