1. Watermarking of digital geospatial datasets: A review of technical, legal and copyright issues;López;International Journal of Geographical Information Science,2002
2. A survey of digital vector map watermarking;Niu;International Journal of Innovative Computing Information and Control,2006
3. Horness E, Nikolaidis N, Pitas I. Blind city maps watermarking utilizing road width information. In: 15th European signal processing conference. 2007. p. 2291–5.
4. Reversible data-hiding scheme for 2-D vector maps based on difference expansion;Wang;IEEE Transactions on Information Forensics and Security,2007
5. A map data watermarking using the generalized square mask;Kang;IEEE International Symposium on Industrial Electronics,2001