WASET
    Sofia Ayouche and  Rachid Ellaia and  Rajae Aboulaich,  A Hybrid Particle Swarm Optimization-Nelder- Mead Algorithm (PSO-NM) for Nelson-Siegel- Svensson Calibration.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2016, vol. 112(4). 1365 - 1369
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/10004553.