1. Algorithms and codes for the assignment problem;Carpaneto,1988
2. Computers and Intractability: A Guide to the Theory of NP-Complete Problems;Garey,1979
3. Some heuristics for the generalized traveling salesman problem;Golden,1985
4. The orienteering problem;Golden;Naval Res. Logist.,1987
5. A multi-faceted heuristic for the orienteering problem;Golden;Naval Res. Logist.,1988