@techreport{sonnet2006,
  author    = {Henry Sonnet and Andrea Unger and Lothar Schlesier and Thomas Vogel and Tobias Isenberg and Thomas Strothotte},
  title     = {Interactive Images using Illustration Watermarks: Techniques, Study, and Applications},
  booktitle = {FIN Preprint Series},
  institution = {Department of Computer Science, Otto-von-Guericke University of Magdeburg},
  year      = {2006},
  number    = {7/2006},
  address   = {Magdeburg, Germany},
  url       = {http://innovis.cpsc.ucalgary.ca/pubs/2006/Sonnet_2006_III.pdf},
}