%0 E-Resource %0 U.S. Federal Government Document %0 Book %A Slaba, Tony C. %E Mertens, Christopher J. %E Blattnig, Steve R. %E Langley Research Center %E United States. National Aeronautics and Space Administration %I National Aeronautics and Space Administration, Langley Research Center %D 2013 %C Hampton, Virginia %G English %B NASA technical paper ; %T Radiation shielding optimization on Mars %U http://purl.fdlp.gov/GPO/gpo45816