George K. Fourlas and  Konstantinos Kalovrektis and  Evangelos Fountas,  Application of Robot Formation Scheme for Screening Solar Energy in a Greenhouse.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2009, vol. 33(9). 2247 - 2253
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/5632.