TY - RPRT TI - User's manual for three dimensional FDTD version D code for scattering from frequency-dependent dielectric and magnetic materials AU - Beggs, John H. AU - Luebbers, Raymond J. AU - Kunz, Karl S. PY - 1992 UR - https://ntrs.nasa.gov/citations/19920011031 ID - 19920011031 ER -