Gaata, Methaq Talib. “Robust Watermarking Scheme for GIS Vector Maps”. Ibn AL-Haitham Journal For Pure and Applied Sciences 31, no. 1 (May 10, 2018): 277–284. Accessed June 23, 2026. https://www.jih.uobaghdad.edu.iq/index.php/j/article/view/1835.