1. Alberta Cancer Board, «Screen Test: Alberta Program for the Early Detection of Breast Cancer», 1999/01 Biennial Report, Edmonton, Alberta, Canada, 2001.
2. IWDM 2000, «Digital Mammography», in M.J. Yaffe, Ed.,Proceedings of the 5th International Workshop on Digital Mammography, Toronto, ON, Canada, Madison, WI: Medical Physics Publishing, 2001.
3. r2 Technology, «Image Checker», http://www.r2tech.com, Sunnyvale, CA, 2002.
4. ge Medical Systems, «Senographe 2000d Mammography System», http://www.gemedicalsystems.com/rad/whc/products/mswh2000d.html, Waukesha, WI, 2002.
5. Philips Medical Systems, «Easy Visionrad», http://www.lxi.leeds.ac.uk/research/CR/mammo.htm, Bothell, WA, 2002.