[en] A collocation method is presented for the calculation of electron slowing-down spectra. The primary advantage of this approach is its versatility. Unlike the well-known Spencer-Fano technique, this method does not require an analytically integrable expression which closely approximates the scattering kernel in the region of small energy transfers. Calculational results are given which demonstrate the effectiveness of the technique. User instructions for a computer program which implements the collocation method are given in Appendix A