TY - RPRT TI - Interferometric metrology of photomask blanks: approaches using 633 nm wavelength AU - Evans, C J AU - Davies, A D AU - Parks, R E AU - Shao, L-Z PY - 2000 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 6701 DO - 10.6028/NIST.IR.6701 ER -