1. Bellman, R.: Dynamic programming treatment of the travelling salesman problem. J. ACM 9(1), 61–63 (1962)
2. Sun, Q., Zhang, J., Wang, Y.: Ant colony algorithm optimization strategy review. Inf. Secur. Technol. 5(2), 22–23 (2014)
3. Xu, Y., Wu, Y., Fu, Y.: Discrete brain storm optimization algorithm based on prior knowledge for traveling salesman problems. In: 2018 13th IEEE Conference on Industrial Electronics and Applications (ICIEA), pp. 2740–2745. IEEE (2018)
4. Bian, F.: An improved quantum particle swarm optimization for solving travelling salesman prom. Comput. Appl. Softw. 26(11), 218–220 (2009)
5. Su, J., Wang, J.: Improved particle swarm optimization for traveling salesman problem. Comput. Eng. Appl. 46(4), 52–53 (2010)