H.K. Abd El-Maksoud and  H.H. Keyser,  Restriction Specificity of Some Soybean Genotypes to Bradyrhizobium japonicum Serogrous.   journal   = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2010, vol. 47(11). 824 - 827
    [viewed 18 January 2022]. Available from: https://publications.waset.org/pdf/5975.