TY - JOUR AU - Jungjae Park AU - Lingfeng Chen AU - Quandou Wang AU - Ulf Griesmann C2 - Optics Express DA - 2012-08-17 00:08:00 LA - en PB - Optics Express PY - 2012 TI - A modified Roberts-Langenbeck test for measuring thickness and refractive index variation of silicon wafers ER -