TY - RPRT TI - Method and apparatus for shadow aperture backscatter radiography (SABR) system and protocol AU - Shedlock, Daniel AU - Jacobs, Alan M. AU - Jacobs, Sharon Auerback AU - Dugan, Edward PY - 2010 UR - https://ntrs.nasa.gov/citations/20100015730 ID - 20100015730 ER -