1. Sketchpad: a man-machine graphical communication system;Sutherland,1963
2. Part and assembly description languages: dimensioning and tolerancing;Requicha,1977
3. Development of a dimension based data structure for two-dimensional computer graphics;Gopin,1978
4. Analysis of dimensions and tolerances in computer-aided mechanical design;Hillyard;Comput. -Aided Des.,1978
5. Dimensions and tolerances in shape design;Hillyard,1978