WASET
    M. R. Gad El- Kareem and  A. M. K. Abdel Aal and  A. Y. Mohamed,  The Synergistic Effects of Using Silicon and Selenium on Fruiting of Zaghloul Date Palm (Phoenix dectylifera L.) .   journal   = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2014, vol. 87(3). 259 - 262
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/9997788.