1. Linjia Heng, Li Guofeng, Liu ChangYou. Two-stage genetic algorithm of order-picking path optimization for Hierarchical carousel with dual servo [J]. Control and Decision, 1997, 12 (4): 332 ~ 336.
2. Lin Jiaheng, Wang Zhao, Liu Changyou. An optimized method for carousel access [J]. Chinese Control and Decision-Making Annual Conference Proceedings, 1995: 412 ~ 415.
3. Xue Yuan. Research on logistics and distribution center technology of chain [D]. Master's Thesis, Shenyang University of Technology, 2003, 3.
4. Lin Jiaheng, Li Guofeng, Li Jianxun. The application of Genetic algorithm in order-picking path optimization of carousel picking with double sorting tables [J]. Journal of Shandong University of Technology, 1997, 27 (3): 236 ~ 239.
5. Ji Zhen. Particle swarm optimization approach and its application [M]. Beijing: Science Press, (2009).