Bib Paruhum Silalahi and  Djihad Wungguli and  Sugi Guritman,  Steepest Descent Method with New Step Sizes.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    July 2015, vol. 103(7). 378 - 384
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10002037.