1. Wilhelm R-M. , Ward , T. L. Rankin R. A. , Gupta R. and Dutton R. “ Innovative Improvement Procedures for Solving Quadratic Assignment Problems ,” Proceedings of the 1984 Conference of the Institute of Industrial Engineers , May 1984, with subsequent publication in Computerized Facilities Planning: Selected Readings, H. L. Hales ed, Industrial Engineering and Management Press, Norcross, GA 1985 .
2. Locational analysis
3. Tree-search algorithms for quadratic assignment problems