Neveen I. Ghali and  Nahed El-Dessouki and  Mervat A. N. and  Lamiaa Bakrawi,  Exponential Particle Swarm Optimization Approach for Improving Data Clustering.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2008, vol. 18(6). 1818 - 1822
    [viewed 20 January 2022]. Available from: https://publications.waset.org/pdf/8531.