Yuelin, C., D. Jianqiang, Z. Jianxin, Z. Ji. "Recognition of Dimensions in Engineering Drawings." Computer Applications: CAD Center, Huazhong University (1994).

Yuelin, C., D. Jianqiang, Z. Jianxin, Z. Ji. "Recognition of Dimensions in Engineering Drawings." Computer Applications: CAD Center, Huazhong University (1994).