Andrew C. Rice, Christopher B. Cain, John K. Fawcett. Dependable Coding of Fiducial Tags. In Hitomi Murakami, Hideyuki Nakashima, Hideyuki Tokuda, Michiaki Yasumura, editors, Ubiquitous Computing Systems, Second International Symposium, UCS 2004, Tokyo, Japan, November 8-9, 2004, Revised Selected Papers. Volume 3598 of Lecture Notes in Computer Science, pages 259-274, Springer, 2004. [doi]