TY - RPRT TI - Use of Existing CAD Models for Radiation Shielding Analysis AU - Lee, K. T. AU - Barzilla, J. E. AU - Wilson, P. AU - Davis, A. AU - Zachman, J. PY - 2015 UR - https://ntrs.nasa.gov/citations/20150017072 ID - 20150017072 ER -