WASET
    Yun-Yao Chi and  Chieh-Kai Tsai and  Dai-Ling Li,  Study on Construction of 3D Topography by  UAV-Based Images.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2018, vol. 136(4). 241 - 244
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/10008869.