Ali, Faez Hassan, and Sajad Majeed Jassim. “New Improved Heuristic Method for Solving Travelling Salesman Problem”. Iraqi Journal of Science 59, no. 4C (December 26, 2018): 2289-2300. Accessed December 7, 2021. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/555.