1. and (1987). A convoy scheduling problem. Research Report ORWP 87/22, Swiss Federal Institute of Technology in Lausanne, December.
2. (1989). Good solutions to job shop scheduling problems via tabu search. Research Report, Department of Industrial Engineering and Operations Research, Columbia University, New York, May.
3. Research Memo;Faigle,1989
4. STABULUS: A technique for finding stable sets in large graphs with tabu search
5. Future paths for integer programming and links to artificial intelligence