TY - RPRT TI - The Cosmology Large Angular Scale Surveyor (CLASS): 40 GHz Optical Design AU - Eimer, Joseph R. AU - Bennett, Charles L. AU - Chuss, David T. AU - Marriage, Tobias AU - Wollack, Edward J. AU - Zeng, Lingzhen PY - 2012 UR - https://ntrs.nasa.gov/citations/20120015627 ID - 20120015627 ER -