1. The role of spatial reasoning in engineering and the design of spatial instruction;Hsi;Journal of Engineering Education,1997
2. Idesawa M, Soma T, Goto E, Shibata S. Automatic input of line drawings and generation of solid figure from three-view data. Proceedings of the International Computer Symposium, vol. II, 1975.
3. Recognition of three-dimensional objects from orthographic views;Lafue;Computer Graphics,1976
4. Fleshing out projections;Markowsky;IBM Journal of Research and Development,1981
5. Solid model input through orthographic views;Sakurai;Computer Graphics,1983