Chun, A. H. W., S. H. C. Chan, F. M. F. Tsang, and D. W. M. Yeung. “Stand-Allocation System (SAS): A Constraint-Based System Developed With Software Components”. AI Magazine, vol. 21, no. 4, Dec. 2000, p. 63, doi:10.1609/aimag.v21i4.1531.