[3] Yang Ruining, An Zhiyong, Cao Weiguo, Shi Lixia. The Automatic Measure for the Circular Hop Error in the Specific Position of Tiny Workpiece. Volume 7, ISTM/2005, p.6667~6669,已被ISTP收錄
[4] Yang Ruining,An Zhiyong,Tian Chengjun,Cao Weiguo. Research on Modern Testing Technology about Diopter of Telescope System,ISAAT2006,p.613~617,EI檢索
[5] Yang Ruining,An Zhiyong,Tian Chengjun,Cao Weiguo. The Automatic Measure for the Radial Dimension in the Specific Position of Tiny Workpiece,ISAAT2006,p.624~628,EI檢索
[6] Cao Weiguo,Yang Ruining,An Zhiyong,Li Xuesong.Research on testing technique of image inclining and graduation inclining of optical system based on CCD imaging theory, SPIE, vol.4778,2004,已被ISTP收錄