M. Culman and  O. Lengerke,  Embodiment Design of an Azimuth-Altitude Solar Tracker.   journal   = {International Journal of Aerospace and Mechanical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2016, vol. 112(4). 673 - 681
    [viewed 09 May 2024]. Available from: https://publications.waset.org/pdf/10004088.