Laffey, Thomas J., Preston A. Cox, James L. Schmidt, Simon M. Kao, and Jackson Y. Readk. “Real-Time Knowledge-Based Systems”. AI Magazine 9, no. 1 (March 15, 1988): 27. Accessed April 16, 2024. https://ojs.aaai.org/aimagazine/index.php/aimagazine/article/view/660.