1. 1) J. W. Berthold III, S. F. Jacobs and M. A. Norton: Dimensional stability of fused silica, Invar, and several ultralow thermal expansion materials, Appl. Opt., 15, 8 (1976) 1898.
2. 2) R. W. Dietz and J. M. Bennett: Smoothness and Thermal Stability of Cer-Vit Optical Material, Appl. Opt., 6, 7 (1967) 1275.
3. 3) A. Jacobsen: High Flying Zerodur, Schott Information, Schott Glasswerke, 3 (1982) 2.
4. 4) R. R. VanBrocklin, W. D. Navan and M. J. Edwards: Corning: Supplier of Multiple Optical Materials for Telescope Projects, Proc. SPIE, 6273 (2006) 627301.
5. 5) Y. Namba, R. Wada, K. Unno and A. Tsuboi: Ultra-Precision Surface Grinder Having a Glass-Ceramic Spindle of Zero-Thermal Expansion, Annals of the CIRP, 38, 1 (1989) 331.