1. van Laarhoven, P.M.J., Aarts, E.H.L.: Simulated Annealing: Theory and Applications. Kluwer Academic Publishers, Norwell MA (1987)
2. Aarts, E.H.L., Lenstra, J.K.: Local Search in Combinatorial Optimization, Chichester [England]. New York (1997)
3. Dorigo, M., Maniezzo, V., Colorni, A.: The ant system: optimization by a colony of cooperating agents. IEEE Trans. Syst. Man Cybern. Part B 26(1), 29–41 (1996)
4. The TSPLIB Symmetric Traveling Salesman Problem Instances. http://elib.zib.de/pub/Packages/mp-testdata/tsp/tsplib/tsp/
5. Lakshmikantham, V., Sen, S.K.: Computational Error and Complexity in Science and Engineering. Elsevier, Amsterdam (2005)