1. Mueller T. Pattern, Express personal communication, 1998.
2. Nguyen H, Richter J, Jacobs P. Rapid prototyping & manufacturing: fundamentals of stereolithography. Chap 10. Jacobs P, SME, 1992:250–254.
3. Andre L, Daniels L, Kennerknecht S, Sarkis B. Stereolithography and other RP&M technologies. Chap 7. Jacobs P, SME, 1996.
4. Connelly R. Rapid tooling for medical products using 3D Keltool®. Proceedings of the SME Rapid Prototyping and Manufacturing 97 conference. Dearborn, MI, 1997:89–99.
5. Dillon K, Terchek R. Dimensionally controlled cobalt-containing precision molded metal article. US Patent No. 4431449, assigned to 3M Corp, 1984.