“…Major advances in the numerical solution of the integral equations of scattering have been made with the Fast Multipole Method (Chew et al, 2001;Hansen, 2013Hansen, , 2014Kolundzija & Kostic, 2014;Rokhlin, 1990;Ylä-Oijala et al, 2005). The progress mainly relates to the efficient handling of many basis functions and large systems of equations.…”