Adrienn Novák,  The Effect of Sowing Time on Phytopathogenic Characteristics and Yield of Sunflower Hybrids.   journal   = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2014, vol. 88(4). 365 - 368
    [viewed 21 September 2021]. Available from: https://publications.waset.org/pdf/9998003.