G. Parmar and  S. Mukherjee and R. Prasad,  Reduced Order Modelling of Linear Dynamic Systems using Particle Swarm Optimized Eigen Spectrum Analysis .   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2007, vol. 1(1). 73 - 80
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/14695.