1. Annual reports of the secretary of war,1915
2. Freeform fabrication of ceramics;Halloran;Br Ceram Proc,1999
3. Don’t forget CNC in rapid prototyping;Metelnick;Machine Des,1994
4. CNC as a rapid prototyping technique;Hassold;Modern Machine Shop,1995
5. Desktop machining without machinists;Fosdick;Machine Des,1994