WASET
    Salvatore Marra and  Francesco C. Morabito,  A New Technique for Solar Activity Forecasting Using Recurrent Elman Networks.   journal   = {International Journal of Physical and Mathematical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    July 2007, vol. 7(7). 330 - 335
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/14968.