Karagul, K., E. Aydemir, and S. Tokat. “Using 2-Opt Based Evolution Strategy for Travelling Salesman Problem”. An International Journal of Optimization and Control: Theories & Applications (IJOCTA), vol. 6, no. 2, Mar. 2016, pp. 103-1, doi:10.11121/ijocta.01.2016.00268.