D. Zare and  H. Safiyari and  F. Salmanizade,  Some Physical and Mechanical Properties of Jujube Fruit.   journal   = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2012, vol. 69(9). 672 - 675
    [viewed 22 October 2019]. Available from: https://publications.waset.org/pdf/8363.