郑敏玉 邱乐路. 应用画法几何解决空间连杆机构杆件的定位[J]. 土木与环境工程学报（中英文）, 1998,20(1):63-66.

Zheng Mingyu Qiu Lelu. Applying Projective Geometry to Solve the Bar Fixing of Spatial Four_Bar Mechanism[J]. Journal of Civil and Environmental Engineering, 1998, 20(1): 63-66.

郑敏玉 邱乐路. 应用画法几何解决空间连杆机构杆件的定位[J]. 土木与环境工程学报（中英文）, 1998,20(1):63-66. DOI： 10.11835/j.issn.1674-4764.1998.01.011.

Zheng Mingyu Qiu Lelu. Applying Projective Geometry to Solve the Bar Fixing of Spatial Four_Bar Mechanism[J]. Journal of Civil and Environmental Engineering, 1998, 20(1): 63-66. DOI： 10.11835/j.issn.1674-4764.1998.01.011.