The Finite Difference Time Domain
Method for Electromagnetics, Karl S. Kunz and Raymond J.
Luebbers, CRC Press, Boca Raton, FL, 1993.
Computational Electrodynamics: The
Finite-Difference Time-Domain Method, Allen Taflove, Artech
House, Boston, MA, 1995.
Advances in Computational
Electrodynamics: The Finite-Difference Time-Domain Method, Allen Taflove, Ed., Artech
House, Boston, MA, 1998.
Animabob: An interactive volume
rendering tool. Open-source, and available for any flavor Unix with
OpenGL or Mesa3D support.
Viz5D: Another volume rendering
tool. Also free!
Viz: Yet another volume
rendering tool. Also free! All the volume rendering tools shown here
have unique strengths the others lack, so they're all worth checking
out. Worth noting: Animabob and Viz use the same file format.
the Evolution of a Field: Platform-independent methods for
rendering in 2D. Includes free source code. This site is very helpful
if you don't have the resources or patience to cope with one of the
resource-hoggy but lovely volume rendering tools.
WinBob: Another option for looking
at 2D slices of a volume. Uses the same file format as Animabob and
Viz, and runs under Windows. WinBob lets you load a volume file and
look at any 2D slices parallel to the x, y, or z axes.