TY - JOUR AU - Burnett, John AU - Levine, Zachary AU - And, E C2 - Photonics Spectra DA - 2001-12-01 LA - en M1 - D PB - Photonics Spectra PY - 2001 TI - Hidden in Plain Sight: Calcium Fluoride's Intrinsic Birefringence ER -