Shahram Nowrouzieh and  Abbas Rezaei Asl and  Mohamad Ali Jafari,  Investigation of Boll Properties on Cotton Picker Machine Performance.   journal   = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2020, vol. 163(7). 75 - 79
    [viewed 12 August 2020]. Available from: https://publications.waset.org/pdf/10011295.