A. Nieslony and G. Steidl, “Approximate Factorizations of Fourier Matrices with Nonequispaced Knots,” Linear Algebra and its Applications, Vol. 366, 2003, pp. 337-351.
http://dx.doi.org/10.1016/S0024-3795(02)00496-2

has been cited by the following article:

• TITLE: Non-Uniform FFT and Its Applications in Particle Simulations

  AUTHORS: Yong-Lei Wang, Fredrik Hedman, Massimiliano Porcu, Francesca Mocci, Aatto Laaksonen

  KEYWORDS: Ewald Summation Method; Non-Uniform Fast Fourier Transform; Dissipative Particle Dynamics

  JOURNAL NAME: Applied Mathematics, Vol.5 No.3, February 12, 2014

  ABSTRACT: Ewald summation method, based on Non-Uniform FFTs (ENUF) to compute the electrostatic interactions and forces, is implemented in two different particle simulation schemes to model molecular and soft matter, in classical all-atom Molecular Dynamics and in Dissipative Particle Dynamics for coarse-grained particles. The method combines the traditional Ewald method with a non-uniform fast Fourier transform library (NFFT), making it highly efficient. It scales linearly with the number of particles as , while being both robust and accurate. It conserves both energy and the momentum to float point accuracy. As demonstrated here, it is straight- forward to implement the method in existing computer simulation codes to treat the electrostatic interactions either between point-charges or charge distributions. It should be an attractive alternative to mesh-based Ewald methods.