WASET
    Chang Liu and  John Nash and  Stephen D. Prior,  A Low-Cost Vision-Based Unmanned Aerial System for Extremely Low-Light GPS-Denied Navigation and Thermal Imaging.   journal   = {International Journal of Aerospace and Mechanical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2015, vol. 106(10). 1807 - 1814
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10002835.