Robert G. Lyons, Alastair Reed, John Stach. Geometric enumerated chrominance watermark embed for spot colors. In Qian Lin 0001, Jan P. Allebach, Zhigang Fan 0001, editors, Imaging and Printing in a Web 2.0 World IV, Burlingame, California, USA, February 3-7, 2013. Volume 8664 of SPIE Proceedings, SPIE, 2013. [doi]