1. Fang Liu, Yutao Qi, Jingjing Ma, Maoguo Gong, Ronghua Shang, Yangyang Li and Licheng Jiao. High Performance Immune Clonal Algorithm for solving Large Scale TSP. Traveling Salesman Problem, Theory and Applications, Book edited by: Donald Davendra, ISBN: 978-953-307-426-9, Publisher: InTech, Publishing date: December 2010.