Three-dimensional problems of electromagnetic scattering have been a subject of intense
investigation and research in various scientific and engineering fields such as astronomy,
optics, meteorology, remote sensing, optical particle sizing or electrical engineering. These
efforts have led to a development of a large number of analytical tools and modelling
techniques for quantitative evaluation of electromagnetic scattering by various particles.
One of the fastest and most powerful numerical tools for computing nonspherical light
scattering is the Generalized Multipole Technique. This name was coined by A. Ludwig
for a spectrum of related methods [1].