WASET
    Dong Ming and  Chen Haipeng,  Research on the Layout of Ground Control Points in Plain area 1:10000 DLG Production Using POS Technique.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2010, vol. 46(10). 920 - 923
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/5134.