E. Seidi,  Effects of Geometry of Disk Openers on Seed Slot Properties.   journal   = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    December 2012, vol. 72(12). 1056 - 1060
    [viewed 10 May 2024]. Available from: https://publications.waset.org/pdf/12127.