1. Asmara, A., & Nienhuis, U. (2006). Automatic piping system in ship. In The 5th international conference on computer and IT applications in the maritime industries, Sieca Repro.
2. Bullnheimer, B., Hartl, R. F., & Strauss, C. (1999). A new rank based version of the Ant System—A computational study. Central European Journal for Operations Research and Economics, 7(1), 25–38.
3. Dorigo, M., & Gambardella, L. M. (1997). Ant colonies for the travelling salesman problem. Biosystems, 43(2), 73–81.
4. Dorigo, M., Maniezzo, V., & Colorni, A. (1996). Ant System: Optimization by a colony of cooperating agents. IEEE Transactions on Systems Man and Cybernetics Part B-Cybernetics, 26(1), 29–41.
5. Fan, J., Ma, M., & Yang, X. G. (2003). Research on automatic laying out for external pipeline for aeroengine. Journal of Mechanical Design, 20(7), 21–23. (in Chinese).