TY - CHAP A1 - Döhring, Thorsten A1 - Hartmann, Peter A1 - Jedamzik, Ralf T1 - Properties of Zerodur mirror blanks for extremely large telescopes T2 - Proceedings of SPIE KW - Zerodur KW - Spiegelteleskop Y1 - 2006 VL - 6148 IS - 61480G ER -