US 5761558, Patton, David Lynn; Travis, Lawrence Joseph & McPherson, Douglas Andrew, "Expanded film cartidge bar code", published 5 June 1995, issued 2 June 1998, assigned to Eastman Kodak Company
spatula.net
Johnson, Nick (18 August 2005). "Interleaved 2 of 5". Everything you Never Wanted to Know About Barcodes. Archived from the original on July 16, 2007. Retrieved August 21, 2007.
web.archive.org
Johnson, Nick (18 August 2005). "Interleaved 2 of 5". Everything you Never Wanted to Know About Barcodes. Archived from the original on July 16, 2007. Retrieved August 21, 2007.