Tarek Aboueldahab,  A New Hybrid Model with Passive Congregation for Stock Market Indices Prediction .   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2012, vol. 66(6). 1674 - 1679
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/14202.