2Brooks R A. Solving the find path problem by good representation of free space[J]. IEEE Trans System Man Cybemetics (SMC), 1983,13(3): 190-197.
3CHEN R W, GEN M. Crossover on intensive search and traveling salesman problem. In:Gen M eds. Proceedings of 16th International conference on Computer & Industrial Engineering [J]. Japan : Nagoya Institute of Technology, 1994, 7-9 : 568-579.
