Marco Lopes and  Pedro D. Gaspar and  Maria P. Simões,  Current Status and Future Trends of Mechanized Fruit Thinning Devices and Sensor Technology.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2019, vol. 145(1). 43 - 57
    [viewed 09 December 2021]. Available from: https://publications.waset.org/pdf/10009952.