1. Yang Yanhua, Zhu Zuping, Yao Ligang. Chinese Journal of Construction machinery, 9 (2009) 312-316. (In Chinese).
2. HAN Y H, LEE K. Computers Industry, 56 (2006) 305-318.
3. HICKS B J, CULLEY S J. Computer-Aided Design. 34 (2002) 435-451.
4. Zhou Hongbo, Zhong Wei, Wu Yanling. Computer Integrated Manufacturing Systems, 2008 (In Chinese).
5. Wen Yongpeng. KBE Based Intelligent and Rapid Design and Virtual Simulation of the Stairs &Plats of Container Crane. Tongji University, 2006. (In Chinese).