TY - JOUR AU - J Burnett AU - Zachary Levine AU - Eric Shirley C2 - Semiconductor Fabtech 15th DA - 2002-01-01 00:01:00 LA - en PB - Semiconductor Fabtech 15th PY - 2002 TI - Intrinsic Birefringence in Crystalline Optical Materials for 193 nm and 157 nm Lithography ER -