WASET
    F. Yildiz and  S. Y. Oturanc,  An Investigation of Direct and Indirect Geo-Referencing Techniques on the Accuracy of Points in Photogrammetry.   journal   = {International Journal of Aerospace and Mechanical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2014, vol. 93(9). 677 - 680
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/9999705.